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File:Tech bonuses.png

2025-11-08T22:27:04Z

Zinc: Zinc uploaded a new version of File:Tech bonuses.png

Technologies

2025-11-01T21:08:08Z

Zinc: Clarified that provided tech tree is for the base game

{{Languages}}
[[File:Technology tree.png|thumb|right|280px|The base game technology tree − Click to enlarge.]]
[[File:tech_bonuses.png|thumb|right|280px|Researched tech bonuses.]]
'''Technologies''' are series of [[research]] projects that provide various enhancements. Some technologies unlock new items or recipes, while others provide bonuses.

Most technologies can be researched in [[lab]]s by consuming [[science pack]]s of various types. For example, the [[Logistics (research)|Logistics]] technology can be unlocked by placing 20 [[automation science pack]]s into labs while the technology is selected for research. Some technologies will automatically unlock after meeting specific conditions, without consumption of any science packs.

== Infinite technologies ==

While most technologies in Factorio are either one-off or have a finite, relatively small number of levels available, a few are "infinite", meaning the player can research as many levels as they can afford. All of them unlock bonuses to existing technologies, never new structures or abilities. The per-level bonuses are constant for a particular infinite technologies and, like finite research bonuses, are additive within a single technology. They are subject to diminishing returns; thus, the per-level and per-science pack contributions from very high levels of infinite technologies will eventually provide only marginal improvements.

All base game infinite technologies levels require [[space science pack]]s, and are also the only technologies that do. As such, they are late-game technologies intended primarily for players who wish to continue playing and expand their factory past the nominal victory condition of launching a rocket.

Infinite technologies are identified in-game by a small <code>∞</code> infinity symbol shown in the top right corner of the research technology's card in the research screen.

Most infinite technologies are continuations of ordinary multi-level technologies; the "infinite" mechanic becomes effective once the player reaches the card initially labeled with <code>N - ∞</code> in the research tree. In the base game, only the two [[artillery]]-related technologies (artillery shell [[artillery shell range (research)|range]] and [[artillery shell shooting speed (research)|shooting speed]]) are infinite-only; for these, <code>1 - ∞</code> is shown before any levels in them are researched. In either case, once the first infinite level is researched, the card label switches to the one discussed above.

=== Pricing formulas ===

The price of all infinite technologies is generated in a [[Wikipedia:Progression|mathematical progression]]; for the majority of technologies, the progression is [[Wikipedia:Geometric_progression|geometric]], mostly in powers of 2. Two technologies - [[mining productivity (research)|mining productivity]] and [[follower robot count (research)|follower robot count]] - use an [[Wikipedia:Arithmetic_progression|arithmetic progression]] instead.

The table below summarizes for all infinite researches their first infinite level, the cost of the first few infinite levels, the cost formula and the per-level bonus.

We denote by <code>N</code> the current level of the research, by <code>F</code> the final non-infinite level of the research (hence F+1 is the first "infinite" level) and by <code>P[N]</code> the price of the research at level <code>N</code>.

{|class="wikitable"
! Technology !! Category !! Bonus !! Science Packs !! F+1 !! P[N] !! P[F+1] !! P[F+2] !! P[F+3] !! P[F+4] !! P[F+5] !! ...
|-
| {{Icontech|Mining productivity (research)}} [[Mining productivity (research)|Mining productivity]] || Productivity || +10% Mining productivity || {{icon|Automation science pack}} {{icon|Logistic science pack}} {{icon|Chemical science pack}} {{icon|Production science pack}} {{icon|Utility science pack}} {{icon|Space science pack}} || style=text-align:center|4 || 2,500 × (N - F) || style=text-align:center|2,500 || style=text-align:center|5,000 || style=text-align:center|7,500 || style=text-align:center|10,000 || style=text-align:center|12,500 || style=text-align:center|+2500
|-
| {{Icontech|Physical projectile damage (research)}} [[Physical projectile damage (research)|Physical projectile damage]] || rowspan="4" | Weapon Damage || +40% Bullet damage <br> +70% Gun turret damage <br> +40% Shotgun shell damage <br> +100% Cannon shell damage || {{icon|Automation science pack}} {{icon|Logistic science pack}} {{icon|Chemical science pack}} {{icon|Military science pack}} {{icon|Utility science pack}} {{icon|Space science pack}} || style=text-align:center|7 || 1,000 × 2^(N - F - 1) || style=text-align:center|1,000 || style=text-align:center|2,000 || style=text-align:center|4,000 || style=text-align:center|8,000 || style=text-align:center|16,000 || style=text-align:center|×2
|-
| {{Icontech|Stronger explosives (research)}} [[Stronger explosives (research)|Stronger explosives]] || +50% Rocket damage <br> +20% Grenade damage <br> +20% Land mine damage || {{icon|Automation science pack}} {{icon|Logistic science pack}} {{icon|Chemical science pack}} {{icon|Military science pack}} {{icon|Utility science pack}} {{icon|Space science pack}} || style=text-align:center|7 || 1,000 × 2^(N - F - 1) || style=text-align:center|1,000 || style=text-align:center|2,000 || style=text-align:center|4,000 || style=text-align:center|8,000 || style=text-align:center|16,000 || style=text-align:center|×2
|-
| {{Icontech|Refined flammables (research)}} [[Refined flammables (research)|Refined flammables]] || +20% Fire damage <br> +20% Flamethrower turret damage || {{icon|Automation science pack}} {{icon|Logistic science pack}} {{icon|Chemical science pack}} {{icon|Military science pack}} {{icon|Utility science pack}} {{icon|Space science pack}} || style=text-align:center|7 || 1,000 × 2^(N - F - 1) || style=text-align:center|1,000 || style=text-align:center|2,000 || style=text-align:center|4,000 || style=text-align:center|8,000 || style=text-align:center|16,000 || style=text-align:center|×2
|-
| {{Icontech|Energy weapons damage (research)}} [[Energy weapons damage (research)|Energy weapons damage]] || +70% Laser damage <br> +70% Electric damage <br> +30% Beam damage || {{icon|Automation science pack}} {{icon|Logistic science pack}} {{icon|Chemical science pack}} {{icon|Military science pack}} {{icon|Utility science pack}} {{icon|Space science pack}} || style=text-align:center|7 || 1,000 × 2^(N - F - 1) || style=text-align:center|1,000 || style=text-align:center|2,000 || style=text-align:center|4,000 || style=text-align:center|8,000 || style=text-align:center|16,000 || style=text-align:center|×2
|-
| {{Icontech|Artillery shell range (research)}} [[Artillery shell range (research)|Artillery shell range]] || rowspan="3" | Non-Damage<br> Weapon Bonus || +30% Artillery shell range || {{icon|Automation science pack}} {{icon|Logistic science pack}} {{icon|Chemical science pack}} {{icon|Military science pack}} {{icon|Utility science pack}} {{icon|Space science pack}} || style=text-align:center|1 || 1,000 × 2^N || style=text-align:center|2,000 || style=text-align:center|4,000 || style=text-align:center|8,000 || style=text-align:center|16,000 || style=text-align:center|32,000 || style=text-align:center|×2
|-
| style="white-space: nowrap" | {{Icontech|Artillery shell shooting speed (research)}} [[Artillery shell shooting speed (research)|Artillery shell shooting speed]] || +100% Artillery shell shooting speed || {{icon|Automation science pack}} {{icon|Logistic science pack}} {{icon|Chemical science pack}} {{icon|Military science pack}} {{icon|Utility science pack}} {{icon|Space science pack}} || style=text-align:center|1 || 1,000 + 1,000 × 3^(N - 1) || style=text-align:center|2,000 || style=text-align:center|4,000 || style=text-align:center|10,000 || style=text-align:center|28,000 || style=text-align:center|82,000 || style=text-align:center|×3 then - 2,000
|-
| {{Icontech|Follower robot count (research)}} [[Follower robot count (research)|Follower robot count]] || +25 Maximum following robots || {{icon|Automation science pack}} {{icon|Logistic science pack}} {{icon|Chemical science pack}} {{icon|Military science pack}} {{icon|Production science pack}} {{icon|Utility science pack}} {{icon|Space science pack}} || style=text-align:center|5 || 1,000 × (N - F) || style=text-align:center|1,000 || style=text-align:center|2,000 || style=text-align:center|3,000 || style=text-align:center|4,000 || style=text-align:center|5,000 || style=text-align:center|+1,000
|-
| {{Icontech|Worker robot speed (research)}} [[Worker robot speed (research)|Worker robot speed]] || Other || +65% Worker robot speed || {{icon|Automation science pack}} {{icon|Logistic science pack}} {{icon|Chemical science pack}} {{icon|Production science pack}} {{icon|Utility science pack}} {{icon|Space science pack}} || style=text-align:center|6 || 1,000 × 2^(N - F - 1) || style=text-align:center|1,000 || style=text-align:center|2,000 || style=text-align:center|4,000 || style=text-align:center|8,000 || style=text-align:center|16,000 || style=text-align:center|×2
|}

==== Space Age ====
The table below summarizes all the infinite technologies in Space Age. Some are unique to Space Age, while some have their price and/or effect changed from the base game.

Due to the introduction of [[Tesla weapons (research)|tesla weapons]], the [[Energy weapons damage (research)|energy weapons damage]] technology is split into [[Laser weapons damage (research)|laser weapons damage]] and [[Electric weapons damage (research)|electric weapons damage]].

{|class="wikitable"
! Technology !! Category !! Bonus !! Science Packs !! F+1 !! P[N] !! P[F+1] !! ...
|-
| {{Icontech|Mining productivity (research)}} [[Mining productivity (research)|Mining productivity]] || rowspan="2" | Productivity || +10% Mining productivity || {{icon|Automation science pack}} {{icon|Logistic science pack}} {{icon|Chemical science pack}} {{icon|Production science pack}} || style=text-align:center|3 || 1,000 × (N - F) || style=text-align:center|1,000 || style=text-align:center|+1,000
|-
| {{Icontech|Research productivity (research)}} [[Research productivity (research)|Research productivity]] {{SA}} || +10% Lab research productivity || {{icon|Automation science pack}} {{icon|Logistic science pack}} {{icon|Military science pack}} {{icon|Chemical science pack}} {{icon|Production science pack}} {{icon|Utility science pack}} {{icon|Space science pack}} {{icon|Metallurgic science pack}} {{icon|Electromagnetic science pack}} {{icon|Agricultural science pack}} {{icon|Cryogenic science pack}} {{icon|Promethium science pack}} || style=text-align:center|1 || 1,000 × 1.2^N || style=text-align:center|1,200 || style=text-align:center|×1.2
|-
| {{Icontech|Steel plate productivity (research)}} [[Steel plate productivity (research)|Steel plate productivity]] {{SA}} || rowspan="8" | Recipe Productivity <br> (no effect beyond level 30) || +10% Steel plate productivity<br> +10% Casting steel productivity || {{icon|Automation science pack}} {{icon|Logistic science pack}} {{icon|Chemical science pack}} {{icon|Production science pack}} || style=text-align:center|1 || 1,000 × 1.5^N || style=text-align:center|1,500 || style=text-align:center|×1.5
|-
| style="white-space: nowrap" | {{Icontech|Low density structure productivity (research)}} [[Low density structure productivity (research)|Low density structure productivity]] {{SA}} || +10% Low density structure productivity<br> +10% Casting low density structure productivity || {{icon|Automation science pack}} {{icon|Logistic science pack}} {{icon|Chemical science pack}} {{icon|Production science pack}} {{icon|Metallurgic science pack}} || style=text-align:center|1 || 1,000 × 1.5^N || style=text-align:center|1,500 || style=text-align:center|×1.5
|-
| {{Icontech|Scrap recycling productivity (research)}} [[Scrap recycling productivity (research)|Scrap recycling productivity]] {{SA}} || +10% Scrap recycling productivity || {{icon|Automation science pack}} {{icon|Logistic science pack}} {{icon|Chemical science pack}} {{icon|Production science pack}} {{icon|Electromagnetic science pack}} || style=text-align:center|1 || 500 × 1.5^N || style=text-align:center|750 || style=text-align:center|×1.5
|-
| {{Icontech|Processing unit productivity (research)}} [[Processing unit productivity (research)|Processing unit productivity]] {{SA}} || +10% Processing unit productivity || {{icon|Automation science pack}} {{icon|Logistic science pack}} {{icon|Chemical science pack}} {{icon|Production science pack}} {{icon|Electromagnetic science pack}} || style=text-align:center|1 || 1,000 × 1.5^N || style=text-align:center|1,500 || style=text-align:center|×1.5
|-
| {{Icontech|Plastic bar productivity (research)}} [[Plastic bar productivity (research)|Plastic bar productivity]] {{SA}} || +10% Plastic bar productivity<br> +10% Bioplastic productivity || {{icon|Automation science pack}} {{icon|Logistic science pack}} {{icon|Chemical science pack}} {{icon|Production science pack}} {{icon|Agricultural science pack}} || style=text-align:center|1 || 1,000 × 1.5^N || style=text-align:center|1,500 || style=text-align:center|×1.5
|-
| {{Icontech|Rocket fuel productivity (research)}} [[Rocket fuel productivity (research)|Rocket fuel productivity]] {{SA}} || +10% Rocket fuel productivity<br> +10% Rocket fuel from jelly productivity<br> +10% Ammonia rocket fuel productivity || {{icon|Automation science pack}} {{icon|Logistic science pack}} {{icon|Chemical science pack}} {{icon|Production science pack}} {{icon|Agricultural science pack}} || style=text-align:center|1 || 1,000 × 1.5^N || style=text-align:center|1,500 || style=text-align:center|×1.5
|-
| {{Icontech|Asteroid productivity (research)}} [[Asteroid productivity (research)|Asteroid productivity]] {{SA}} || +10% Carbonic asteroid crushing productivity<br> +10% Oxide asteroid crushing productivity<br> +10% Metallic asteroid crushing productivity<br> +10% Advanced carbonic asteroid productivity<br> +10% Advanced oxide asteroid crushing productivity<br> +10% Advanced metallic asteroid crushing productivity || {{icon|Automation science pack}} {{icon|Logistic science pack}} {{icon|Chemical science pack}} {{icon|Production science pack}} {{icon|Utility science pack}} {{icon|Space science pack}} {{icon|Agricultural science pack}} || style=text-align:center|1 || 1,000 × 1.5^N || style=text-align:center|1,500 || style=text-align:center|×1.5
|-
| {{Icontech|Rocket part productivity (research)}} [[Rocket part productivity (research)|Rocket part productivity]] {{SA}} || +10% Rocket part productivity || {{icon|Automation science pack}} {{icon|Logistic science pack}} {{icon|Chemical science pack}} {{icon|Production science pack}} {{icon|Cryogenic science pack}} || style=text-align:center|1 || 2,000 × 1.5^N || style=text-align:center|3,000 || style=text-align:center|×1.5
|-
| {{Icontech|Physical projectile damage (research)}} [[Physical projectile damage (research)|Physical projectile damage]] || rowspan="7" | Weapon Damage || +20% Bullet damage <br> +20% Gun turret damage <br> +40% Shotgun shell damage <br> +100% Cannon shell damage || {{icon|Automation science pack}} {{icon|Logistic science pack}} {{icon|Chemical science pack}} {{icon|Military science pack}} {{icon|Utility science pack}} {{icon|Space science pack}} || style=text-align:center|7 || 1,000 × 2^(N - F - 1) || style=text-align:center|1,000 || style=text-align:center|×2
|-
| {{Icontech|Laser weapons damage (research)}} [[Laser weapons damage (research)|Laser weapons damage]] {{SA}} || +70% Laser damage || {{icon|Automation science pack}} {{icon|Logistic science pack}} {{icon|Chemical science pack}} {{icon|Military science pack}} {{icon|Utility science pack}} {{icon|Space science pack}} || style=text-align:center|7 || 1,000 × 2^(N - F - 1) || style=text-align:center|1,000 || style=text-align:center|×2
|-
| {{Icontech|Artillery shell damage (research)}} [[Artillery shell damage (research)|Artillery shell damage]] {{SA}} || +10% Artillery shell damage || {{icon|Automation science pack}} {{icon|Logistic science pack}} {{icon|Chemical science pack}} {{icon|Military science pack}} {{icon|Utility science pack}} {{icon|Space science pack}} {{icon|Metallurgic science pack}} || style=text-align:center|1 || 1,000 × 2^(N - 1) || style=text-align:center|1,000 || style=text-align:center|×2
|-
| {{Icontech|Stronger explosives (research)}} [[Stronger explosives (research)|Stronger explosives]] || +50% Rocket damage <br> +20% Grenade damage <br> +20% Land mine damage || {{icon|Automation science pack}} {{icon|Logistic science pack}} {{icon|Chemical science pack}} {{icon|Military science pack}} {{icon|Utility science pack}} {{icon|Space science pack}} {{icon|Agricultural science pack}} || style=text-align:center|7 || 1,000 × 2^(N - F - 1) || style=text-align:center|1,000 || style=text-align:center|×2
|-
| {{Icontech|Refined flammables (research)}} [[Refined flammables (research)|Refined flammables]] || +20% Fire damage<br> +20% Flamethrower turret damage || {{icon|Automation science pack}} {{icon|Logistic science pack}} {{icon|Chemical science pack}} {{icon|Military science pack}} {{icon|Utility science pack}} {{icon|Space science pack}} {{icon|Agricultural science pack}} || style=text-align:center|7 || 1,000 × 2^(N - F - 1) || style=text-align:center|1,000 || style=text-align:center|×2
|-
| {{Icontech|Electric weapons damage (research)}} [[Electric weapons damage (research)|Electric weapons damage]] {{SA}} || +70% Tesla damage <br> +70% Electric damage <br> +30% Beam damage || {{icon|Automation science pack}} {{icon|Logistic science pack}} {{icon|Military science pack}} {{icon|Chemical science pack}} {{icon|Utility science pack}} {{icon|Space science pack}} {{icon|Electromagnetic science pack}} || style=text-align:center|4 || 1,000 × 2^(N - F) || style=text-align:center|2,000 || style=text-align:center|×2
|-
| {{Icontech|Railgun damage (research)}} [[Railgun damage (research)|Railgun damage]] {{SA}} || +40% Railgun damage || {{icon|Automation science pack}} {{icon|Logistic science pack}} {{icon|Military science pack}} {{icon|Chemical science pack}} {{icon|Utility science pack}} {{icon|Space science pack}} {{icon|Metallurgic science pack}} {{icon|Agricultural science pack}} || style=text-align:center|1 || 1,000 × 2^(N - 1) || style=text-align:center|1,000 || style=text-align:center|×2
|-
| {{Icontech|Artillery shell range (research)}} [[Artillery shell range (research)|Artillery shell range]] || rowspan="4" | Non-Damage <br> Weapon Bonus || +30% Artillery shell range || {{icon|Automation science pack}} {{icon|Logistic science pack}} {{icon|Chemical science pack}} {{icon|Military science pack}} {{icon|Utility science pack}} {{icon|Space science pack}} {{icon|Metallurgic science pack}} || style=text-align:center|1 || 1,000 × 2^(N - 1) || style=text-align:center|1,000 || style=text-align:center|×2
|-
| {{Icontech|Artillery shell shooting speed (research)}} [[Artillery shell shooting speed (research)|Artillery shell shooting speed]] || +100% Artillery shell shooting speed || {{icon|Automation science pack}} {{icon|Logistic science pack}} {{icon|Chemical science pack}} {{icon|Military science pack}} {{icon|Utility science pack}} {{icon|Space science pack}} {{icon|Metallurgic science pack}} || style=text-align:center|1 || 1,000 × 2^(N - 1) || style=text-align:center|1,000 || style=text-align:center|×2
|-
| {{Icontech|Railgun shooting speed (research)}} [[Railgun shooting speed (research)|Railgun shooting speed]] {{SA}} || +15% Railgun shooting speed || {{icon|Automation science pack}} {{icon|Logistic science pack}} {{icon|Chemical science pack}} {{icon|Military science pack}} {{icon|Utility science pack}} {{icon|Space science pack}} {{icon|Electromagnetic science pack}} {{icon|Cryogenic science pack}} || style=text-align:center|1 || 1,000 × 2^(N - 1) || style=text-align:center|1,000 || style=text-align:center|×2
|-
| {{Icontech|Follower robot count (research)}} [[Follower robot count (research)|Follower robot count]] || +25 Maximum following robots || {{icon|Automation science pack}} {{icon|Logistic science pack}} {{icon|Chemical science pack}} {{icon|Military science pack}} {{icon|Production science pack}} {{icon|Utility science pack}} {{icon|Space science pack}} || style=text-align:center|5 || 1,000 × (N - F) || style=text-align:center|1,000 || style=text-align:center|+1,000
|-
| {{Icontech|Worker robot speed (research)}} [[Worker robot speed (research)|Worker robot speed ]] || rowspan="2" | Other || +65% Worker robot speed || {{icon|Automation science pack}} {{icon|Logistic science pack}} {{icon|Chemical science pack}} {{icon|Production science pack}} {{icon|Utility science pack}} {{icon|Space science pack}} {{icon|Electromagnetic science pack}} || style=text-align:center|7 || 1,000 × 2^(N - F) || style=text-align:center|2,000 || style=text-align:center|×2
|-
| {{Icontech|Health (research)}} [[Health (research)|Health]] {{SA}} || +50 Character health || {{icon|Military science pack}} {{icon|Utility science pack}} {{icon|Agricultural science pack}} || style=text-align:center|1 || 50 × 2^N || style=text-align:center|100 || style=text-align:center|×2
|}

=== Cumulative cost ===

As the price of most infinite technologies (specifically, those based on geometric progressions) increases very steeply, it may be a good idea for players to set realistic target levels for each of the infinite technologies they wish to pursue, and make their factory plans accordingly. To that end, the following properties of cumulative infinite research prices may be useful:

#For infinite technologies whose underlying equation is a powers-of-two geometric series, the cumulative price of the first <code>N - F</code> infinite levels (skipping the first <code>F</code> level, so counting "infinite" levels only) is <code>2 × P[N] - P[F+1]</code>; i.e., twice the price of the final researched level, less the price of the first "infinite" level.
#*As ''N'' increases, this is approximated well by <code>2 × P[N] = P[N+1]</code>, so the cumulative cost of researching to level <code>N</code> is about as much as researching level <code>N+1</code>.
#*If one decides a level <code>M</code> which one considers the "highest feasible" with their current science pack production capacity, expanding said capacity by a factor of <code>X</code> will allow about <code>log[2](X)</code> additional levels to be researched before the next level takes longer to research with the expanded capacity than level <code>M + 1</code> would have taken with the pre-expansion production capacity.
#*For example, if one expands production capacity by a factor of 10, they will be able to research at least <code>floor(log[2](10)) = 3</code> and at most <code>ceiling(log[2](10)) = 4</code> additional levels in a given technology before the exponential increase in price negates the speed benefits of their ×10 capacity expansion.
#The cumulative price of the first <code>N - F</code> levels of infinite technologies whose underlying equation is an arithmetic series is <code>(N - F) × (P[N] + P[F + 1]) ÷ 2</code>; i.e, <code>N - F</code> times the mean of the prices of the first and last "infinite" level. For the [[Follower robot count (research)]], an additional <code>900 × (N-F)</code> need to be added.
#*Expanding production capacity by a factor of <code>X</code>, as above, will in this case allow an additional <code>N × (X - 1)</code> levels to be researched before the benefit of the expansion is wiped out (i.e., research progress speed drops to or below what it was pre-expansion).
#The cumulative price of the first '''''N''''' levels of '''artillery shell shooting speed''', the sole infinite technology whose underlying equation is a powers-of-three geometric series (equation type (2)) is <code>1.5 × P[N] - 0.5 × P[1]</code>; i.e., 1.5 times the price of the final researched level, less half the price of the first level.

Note that these prices reflect '''research units''', which will not be equal to science packs if [[productivity module|productivity modules]] are used in labs. (In that case, the science pack requirement will be lower.)

=== Infinite productivity research limits {{SA}} ===

All recipes have a maximum productivity of 300%. This was [https://factorio.com/blog/post/fff-375 primarily done to prevent infinite resource exploits] involving the [[recycler]]{{SA}} and its 25% return of input items. This cap puts a hard limit on the effectiveness of most infinite productivity researches. It can be researched past level 30, but it will have no practical effect.

Note that miners are not crafting machines that execute recipes, nor are labs. As such, [[mining productivity (research)]] and [[research productivity (research)]]{{SA}} have no limit.

The [[Railgun shooting speed (research)|railgun turret's shooting speed]] is limited by its [https://forums.factorio.com/viewtopic.php?p=673363#p673363 animation], which means it can't shoot faster than 0.845 times per second (once per 71 [[Time#Tick|ticks]]). This shooting speed is reached at level 10 and researching past that level will have no practical effect on the railgun turret, however it '''will''' continue to increase the shooting speed of the hand-held [[railgun]].

== Trigger technologies ==
The technologies listed below are researched by the player performing certain actions (usually mining or crafting a specific item) instead of by using science packs in labs.

=== Nauvis ===
{|class="wikitable"
! Technology !! Research trigger
|-
| {{Icontech|Steam power (research)}} [[Steam power (research)|Steam power]] || Craft 50 [[iron plate]]
|-
| {{Icontech|Electronics (research)}} [[Electronics (research)|Electronics]] || Craft 10 [[copper plate]]
|-
| {{Icontech|Automation science pack (research)}} [[Automation science pack (research)|Automation science pack]] || Craft a [[lab]]
|-
| {{Icontech|Steel axe (research)}} [[Steel axe (research)|Steel axe]] || Craft 50 [[steel plate]]
|-
| {{Icontech|Oil processing (research)}} [[Oil processing (research)|Oil processing]] || Mine [[crude oil]]
|-
| {{Icontech|Uranium processing (research)}} [[Uranium processing (research)|Uranium processing]] || Mine [[uranium ore]]
|-
| {{Icontech|Biter egg handling (research)}} [[Biter egg handling (research)|Biter egg handling]] {{SA}} || Capture a [[Enemies#Nests|biter/spitter spawner]]
|}

=== Space {{SA}}===
{|class="wikitable"
! Technology !! Research trigger
|-
| {{Icontech|Space platform (research)}} [[Space platform (research)|Space platform]] {{SA}} || Launch a [[space platform starter pack]]
|-
| {{Icontech|Space science pack (research)}} [[Space science pack (research)|Space science pack]] {{SA}} || Craft an [[asteroid collector]]
|}

=== Fulgora {{SA}}===
{|class="wikitable"
! Technology !! Research trigger
|-
| {{Icontech|Recycling (research)}} [[Recycling (research)|Recycling]] {{SA}} || Mine [[Fulgoran vault ruin]]
|-
| {{Icontech|Holmium processing (research)}} [[Holmium processing (research)|Holmium processing]] {{SA}} || Craft [[holmium ore]]
|-
| {{Icontech|Electromagnetic plant (research)}} [[Electromagnetic plant (research)|Electromagnetic plant]] {{SA}} || Craft 50 [[holmium plate]]
|-
| {{Icontech|Electromagnetic science pack (research)}} [[Electromagnetic science pack (research)|Electromagnetic science pack]] {{SA}} || Craft [[supercapacitor]]
|}

=== Gleba {{SA}}===
{|class="wikitable"
! Technology !! Research trigger
|-
| {{Icontech|Jellynut (research)}} [[Jellynut (research)|Jellynut]] {{SA}} || Mine [[jellystem]]
|-
| {{Icontech|Yumako (research)}} [[Yumako (research)|Yumako]] {{SA}} || Mine [[yumako tree]]
|-
| {{Icontech|Heating tower (research)}} [[Heating tower (research)|Heating tower]] {{SA}} || Mine [[copper stromatolite]]
|-
| {{Icontech|Agriculture (research)}} [[Agriculture (research)|Agriculture]] {{SA}} || Mine [[iron stromatolite]]
|-
| {{Icontech|Biochamber (research)}} [[Biochamber (research)|Biochamber]] {{SA}} || Craft 10 [[nutrients]]
|-
| {{Icontech|Artificial soil (research)}} [[Artificial soil (research)|Artificial soil]] {{SA}} || Craft 500 [[nutrients]]
|-
| {{Icontech|Bioflux (research)}} [[Bioflux (research)|Bioflux]] {{SA}} || Craft [[biochamber]]
|-
| {{Icontech|Bacteria cultivation (research)}} [[Bacteria cultivation (research)|Bacteria cultivation]] {{SA}} || Craft [[bioflux]]
|-
| {{Icontech|Bioflux processing (research)}} [[Bioflux processing (research)|Bioflux processing]] {{SA}} || Craft 25 [[bioflux]]
|-
| {{Icontech|Agricultural science pack (research)}} [[Agricultural science pack (research)|Agricultural science pack]] {{SA}} || Craft 100 [[bioflux]]
|}

=== Vulcanus {{SA}}===
{|class="wikitable"
! Technology !! Research trigger
|-
| {{Icontech|Tungsten carbide (research)}} [[Tungsten carbide (research)|Tungsten carbide]] {{SA}} || Mine [[Rock|big volcanic rock]]
|-
| {{Icontech|Calcite processing (research)}} [[Calcite processing (research)|Calcite processing]] {{SA}} || Mine [[calcite]]
|-
| {{Icontech|Foundry (research)}} [[Foundry (research)|Foundry]] {{SA}} || Craft [[tungsten carbide]]
|-
| {{Icontech|Big mining drill (research)}} [[Big mining drill (research)|Big mining drill]] {{SA}} || Craft a [[foundry]]
|-
| {{Icontech|Tungsten steel (research)}} [[Tungsten steel (research)|Tungsten steel]] {{SA}} || Craft a [[big mining drill]]
|-
| {{Icontech|Metallurgic science pack (research)}} [[Metallurgic science pack (research)|Metallurgic science pack]] {{SA}} || Craft [[tungsten plate]]
|}

=== Aquilo {{SA}}===
{|class="wikitable"
! Technology !! Research trigger
|-
| {{Icontech|Lithium processing (research)}} [[Lithium processing (research)|Lithium processing]] {{SA}} || Mine [[Lithium ice formation|big lithium ice formation]]
|-
| {{Icontech|Cryogenic plant (research)}} [[Cryogenic plant (research)|Cryogenic plant]] {{SA}} || Craft [[lithium plate]]
|-
| {{Icontech|Cryogenic science pack (research)}} [[Cryogenic science pack (research)|Cryogenic science pack]] {{SA}} || Craft [[cryogenic plant]]
|}

== Achievements ==
{{Achievement|tech-maniac}}
* Completing infinite technologies of any level is not required for '''Tech maniac'''. All non-infinite levels of technologies that have infinite continuations are still required.

== History ==
{{history|2.0.7|
* Introduced trigger technologies (https://www.factorio.com/blog/post/fff-376)
|}}

== See also ==

* [[Research]]
* [[Science pack]]

{{TechNav}}

File:Technology tree.png

2025-11-01T21:05:09Z

Zinc: Zinc uploaded a new version of File:Technology tree.png

Infobox:Chemical science pack

2025-11-01T18:17:10Z

Zinc: Updated for consistency with other science pack infoboxes by adding, "Used by labs for research."

{{Infobox
|prototype-type = tool
|internal-name = chemical-science-pack
|category = Intermediate products
|stack-size=200
|science-capacity = {{Quality|100%|200%|300%|400%|600%}}
|extra1 = Used by labs for research.
|recipe = Time, 24 + Advanced circuit, 3 + Engine unit, 2 + Sulfur, 1 = Chemical science pack, 2
|total-raw = Time, 52.5 + Copper plate, 15 + Engine unit, 2 + Iron plate, 6 + Plastic bar, 6 + Sulfur, 1
|required-technologies = Chemical science pack
|producers = Assembling machine + Player
|rocket-capacity = 1000 (5 {{Translation|stacks}})
}}<noinclude>
[[Category:Infobox page]]
</noinclude>

Raw fish

2025-11-01T18:08:14Z

Zinc:

{{Languages}}
{{:Infobox:Raw fish}}<div style="overflow: hidden">
'''Raw fish''' can be harvested from [[water]]. They can be used to refill a small amount of health instantly. In order to catch raw fish, mine one of the dark spots that can be found moving around in water bodies. Each dark spot yields 5 fish when mined. Fish can be also collected via [[construction robot]]s, by marking a water area that contains fish with a [[deconstruction planner]].

Raw fish is used to heal by clicking on the character or anywhere else in the world with the fish in the cursor. They heal 80 HP each and have a short cooldown for reuse, limiting the amount of incoming DPS that fish healing can absorb. Using a fish produces a munching sound.

Using [[landfill]] on water where a fish is swimming will "destroy" the fish. Fish can be shot and killed via [[pistol]] or [[submachine gun]], [[flamethrower]], [[tesla gun]], and also by explosions, but are immune to any kind of [[shotgun]] or [[railgun]] fire. Shooting fish does not grant any fish items.

Fish are created in water when the world is generated and do not despawn or respawn. While inserters can remove fish from the water, they cannot put them back. The player can manually return fish to the water in stacks of 5, which resets both the quality and freshness of the fish.

== Alternative recipes ==
In [[Space Age]]{{SA}}, fish can be automated by breeding them in a [[biochamber]]{{SA}} after unlocking the fish breeding recipe with [[agricultural science pack]]s{{SA}}. Fish breeding can only be conducted on [[Nauvis]]. Fish also are given a [[spoilage mechanics|spoilage]]{{SA}} time of just over 2 hours.

{| class="wikitable"
! Process !! Input !! Output !! Made in !! Required technology !! Crafted only on
|-
| {{Icon|Fish breeding|space-age=yes}} Fish breeding || {{Icon|Time|6}} + {{Icon|Raw fish|2}} + {{Icon|Nutrients|100}} + {{Icon|Water|100}} || {{Icon|Raw fish|3}} || {{Icon|Biochamber|space-age=yes}} || {{Icontech|Fish breeding (research)}} [[Fish breeding (research)]] || {{Icon|Nauvis}}
|}

Note that the fish produced by this recipe always have 100% freshness. Neither [[quality module]]s nor [[productivity module]]s can be used in this recipe.

== Achievements ==
{{Achievement|so-long-and-thanks-for-all-the-fish}}</div>
{{Achievement|todays-fish-is-trout-a-la-creme}}

== Gallery ==
<gallery widths=250px heights=200px>
File:Inserter fishing.gif|[[Inserters]] can catch fish.
</gallery>

== Trivia ==
* The fish item icon is meant to represent a [[Wikipedia:en:European perch|European perch]], a freshwater fish widespread in Europe and elsewhere. This was chosen because a perch is the favorite plushie of the artist's daughter, see the [https://www.reddit.com/r/factorio/comments/gom295/friday_facts_348_the_final_gui_update/frgl1go/ Reddit comment by V453000]
* Prior to version [[version history/2.0.0#2.0.7|2.0]] it was possible to automate fish by launching [[space science pack]]s with a [[rocket silo]], which would return fish at a 1:1 ratio, to a maximum of 100 fish per launch.
* In Space Age, a base quality fish has a [[spoilage mechanics|spoilage]] time of 2 hours, 5 minutes, and 50 seconds. This equates to 7,550 seconds, or 453,000 [[time#Ticks|game ticks]], which is a reference to developer V453000, the artist behind the fish icon.

== History ==
{{history|2.0.7|
* Launching space science pack into space no longer returns fish as there is now an other method to automate obtaining fish.}}

{{history|1.0.0|
* Launching a rocket with space science packs inside now returns fish (Undocumented)}}

{{history|0.17.77|
* Inserters can now catch fish (Undocumented)}}

{{history|0.15.0|
* Fish can be collected by robots
* Amount of fish collected at once increased from 1 to 5
* Amount of health restored by fish increased from 20 to 80}}

{{history|0.6.0|
* New fish graphics}}

{{history|0.1.0|
* Introduced}}

{{IntermediateNav}}
{{C|Resources}}

Raw fish

2025-11-01T18:06:50Z

Zinc: Updated fish killing methods

{{Languages}}
{{:Infobox:Raw fish}}<div style="overflow: hidden">
'''Raw fish''' can be harvested from [[water]]. They can be used to refill a small amount of health instantly. In order to catch raw fish, mine one of the dark spots that can be found moving around in water bodies. Each dark spot yields 5 fish when mined. Fish can be also collected via [[construction robot]]s, by marking a water area that contains fish with a [[deconstruction planner]].

Raw fish is used to heal by clicking on the character or anywhere else in the world with the fish in the cursor. They heal 80 HP each and have a short cooldown for reuse, limiting the amount of incoming DPS that fish healing can absorb. Using a fish produces a munching sound.

Using [[landfill]] on water where a fish is swimming will "destroy" the fish. Fish can be shot and killed via [[pistol]] or [[submachine gun]], [[flamethrower]], [[tesla gun]], and explosions, but are immune to any kind of [[shotgun]] or [[railgun]] fire. Shooting fish does not grant any fish items.

Fish are created in water when the world is generated and do not despawn or respawn. While inserters can remove fish from the water, they cannot put them back. The player can manually return fish to the water in stacks of 5, which resets both the quality and freshness of the fish.

== Alternative recipes ==
In [[Space Age]]{{SA}}, fish can be automated by breeding them in a [[biochamber]]{{SA}} after unlocking the fish breeding recipe with [[agricultural science pack]]s{{SA}}. Fish breeding can only be conducted on [[Nauvis]]. Fish also are given a [[spoilage mechanics|spoilage]]{{SA}} time of just over 2 hours.

{| class="wikitable"
! Process !! Input !! Output !! Made in !! Required technology !! Crafted only on
|-
| {{Icon|Fish breeding|space-age=yes}} Fish breeding || {{Icon|Time|6}} + {{Icon|Raw fish|2}} + {{Icon|Nutrients|100}} + {{Icon|Water|100}} || {{Icon|Raw fish|3}} || {{Icon|Biochamber|space-age=yes}} || {{Icontech|Fish breeding (research)}} [[Fish breeding (research)]] || {{Icon|Nauvis}}
|}

Note that the fish produced by this recipe always have 100% freshness. Neither [[quality module]]s nor [[productivity module]]s can be used in this recipe.

== Achievements ==
{{Achievement|so-long-and-thanks-for-all-the-fish}}</div>
{{Achievement|todays-fish-is-trout-a-la-creme}}

== Gallery ==
<gallery widths=250px heights=200px>
File:Inserter fishing.gif|[[Inserters]] can catch fish.
</gallery>

== Trivia ==
* The fish item icon is meant to represent a [[Wikipedia:en:European perch|European perch]], a freshwater fish widespread in Europe and elsewhere. This was chosen because a perch is the favorite plushie of the artist's daughter, see the [https://www.reddit.com/r/factorio/comments/gom295/friday_facts_348_the_final_gui_update/frgl1go/ Reddit comment by V453000]
* Prior to version [[version history/2.0.0#2.0.7|2.0]] it was possible to automate fish by launching [[space science pack]]s with a [[rocket silo]], which would return fish at a 1:1 ratio, to a maximum of 100 fish per launch.
* In Space Age, a base quality fish has a [[spoilage mechanics|spoilage]] time of 2 hours, 5 minutes, and 50 seconds. This equates to 7,550 seconds, or 453,000 [[time#Ticks|game ticks]], which is a reference to developer V453000, the artist behind the fish icon.

== History ==
{{history|2.0.7|
* Launching space science pack into space no longer returns fish as there is now an other method to automate obtaining fish.}}

{{history|1.0.0|
* Launching a rocket with space science packs inside now returns fish (Undocumented)}}

{{history|0.17.77|
* Inserters can now catch fish (Undocumented)}}

{{history|0.15.0|
* Fish can be collected by robots
* Amount of fish collected at once increased from 1 to 5
* Amount of health restored by fish increased from 20 to 80}}

{{history|0.6.0|
* New fish graphics}}

{{history|0.1.0|
* Introduced}}

{{IntermediateNav}}
{{C|Resources}}

Enemies

2025-11-01T17:43:19Z

Zinc: Updated shooting speed to match Factoriopedia

{{Languages}}
{{Stub}}
[[File:biter_intro.png|175px|right]]'''Enemies''' are creatures that want to [[Damage|harm]] the [[player]]. They are the native inhabitants of the extraterrestrial worlds on which the player is operating. Enemies show up on the map as red dots.

On [[Nauvis]], the enemies are arthropods which live in organic nests. They are encountered in three species: Biters, Spitters, and Worms (though the nickname "Biters" is often used collectively for all of them).

More enemies can be encountered on other planets with the [[Space Age]] expansion. On the planet [[Gleba]]{{SA}}, there are pentapods which come in three variants: Wrigglers, Strafers, and Stompers. On the planet [[Vulcanus]]{{SA}}, there are the Demolishers.

Each species comes in a range of sizes, where larger specimens have more health and do more damage.

== Achievements ==
Enemies are directly connected to the following achievements:
{{Achievement|it-stinks-and-they-dont-like-it}}
{{Achievement|steamrolled}}
{{Achievement|art-of-siege}}
{{Achievement|keeping-your-hands-clean}}
{{Achievement|it-stinks-and-they-do-like-it}}
{{Achievement|get-off-my-lawn}}
{{Achievement|if-it-bleeds}}
{{Achievement|we-need-bigger-guns}}
{{Achievement|Size-doesnt-matter}}

==Creatures==
===Biters===
Biters are one of two main antagonists in the base game. They come in four sizes: small, medium, big and behemoth. In the beginning of a game, there will only be the small ones. With increasing [[pollution]], they will become bigger, related to the enemy's [[#Evolution|evolution]]. As common sense may suggest, their method of attack is a straightforward charge to "bite" things.

{| class="wikitable"
|-
! Picture !! Name !! Info
|-
| [[File:small_biter.png|center]] || Small biter
| Weakest of biters, can be easily killed with a pistol.
* Planet: Nauvis
* Health: 15
* Damage: 7 Physical
* Attack speed: 1.71/s
* Speed: 43.2km/h
* Range: 0.5
* Pollution to join attack: 4
|-
| [[File:medium_biter.png|center]] || Medium biter
| Stronger and slightly faster than the small biter. Can pose a problem for and even kill weaker players.
* Planet: Nauvis
* Health: 75
* Damage: 15 Physical
* Attack speed: 1.71/s
* Speed: 51.8km/h
* Range: 1
* Pollution to join attack: 20

[[Damage#Resistance|Resistances]]:
*Explosion: 0/10%
*Physical: 4/10%
|-
| [[File:big_biter.png|center]] || Big biter
| Dangerous, resistant to small arms. Can attack through walls, hitting objects directly behind them. Hatches from spoiled [[biter egg|biter eggs]], however it won't be at full health when this happens.
* Planet: Nauvis
* Health: 375
* Damage: 30 Physical
* Attack speed: 1.71/s
* Speed: 49.7km/h
* Range: 1.5
* Pollution to join attack: 80

Resistances:
*Explosion: 0/10%
*Physical: 8/10%
|-
| [[File:behemoth_biter.png|center]] || Behemoth biter
| Extremely durable and nearly immune to small arms, except for the strongest ordnance. Can attack through walls, hitting objects directly behind them.
* Planet: Nauvis
* Health: 3000
* Damage: 90 Physical
* Attack speed: 1.2/s
* Speed: 64.8km/h
* Range: 1.5
* Pollution to join attack: 400

Resistances:
*Explosion: 12/10%
*Physical: 12/10%

|}

===Spitters===
'''Spitters''' are much like [[Enemies#Biters|biters]] and only appear slightly later on in the game as the evolution factor increases. Their main difference from biters is their ranged attack. Using predictive aiming, they spit a stream of acid at enemies which leaves behind a puddle of acid where it hits the ground. Due to the spitters' predictive aiming, the acid stream can be dodged by suddenly changing walking directions or standing still.[https://factorio.com/blog/post/fff-279] Both the stream and the puddle of acid deal damage over time and slow down players and vehicles. Most entities of the game have a much lower resistance to acid than other damage types (including [[turret]]s and [[armor]]), so spitters are effectively more potent against the player and their factories. Their behavior and size classification are the same as with biters, but their health is universally lower and they are resistant exclusively against explosives, with no physical resistance.

{| class="wikitable"
|-
! Picture !! Name !! Info
|-
| [[File:small_spitter.png|center]] || Small spitter
| Weakest of spitters. Easy to kill with any weapon, but attacks at range.
* Planet: Nauvis
* Health: 10
* Range: 13
* Pollution to join attack: 4
* Speed: 40.0km/h

Acid projectile:
* Attack speed: 0.6/s
* Area of effect size: 1
* Damage (on contact): 12 Acid

Acid puddle:
* Lifetime: 32 seconds
* Damage: 7.2 Acid/second
* Applies effect (on contact):
** Movement/vehicle speed modifier: 60%
** Duration: 2 seconds

|-
| [[File:medium_spitter.png|center]] || Medium spitter
| Stronger and slower than the smaller version. Can pose a problem for and even kill weaker players.
* Planet: Nauvis
* Health: 50
* Range: 14
* Pollution to join attack: 12
* Speed: 35.6km/h

Acid projectile:
* Attack speed: 0.6/s
* Area of effect size: 1.25
* Damage (on contact): 24 Acid

Acid puddle:
* Lifetime: 32 seconds
* Damage: 28.8 Acid/second
* Applies effect (on contact):
** Movement/vehicle speed modifier: 50%
** Duration: 2 seconds

Resistances:
*Explosion: 0/10%
|-
| [[File:big_spitter.png|center]] || Big spitter
| An even bulkier spitter and so can take more damage.
* Planet: Nauvis
* Health: 200
* Range: 15
* Pollution to join attack: 30
* Speed: 32.4km/h

Acid projectile:
* Attack speed: 0.6/s
* Area of effect size: 1.35
* Damage (on contact): 36 Acid

Acid puddle:
* Lifetime: 32 seconds
* Damage: 130 Acid/second
* Applies effect (on contact):
** Movement/vehicle speed modifier: 40%
** Duration: 2 seconds

Resistances:
*Explosion: 0/15%
|-
| [[File:behemoth_spitter.png|center]] || Behemoth spitter
| The bulkiest of the spitters and so can take even more damage.
* Planet: Nauvis
* Health: 1500
* Range: 16
* Pollution to join attack: 200
* Speed: 32.4km/h

Acid projectile:
* Attack speed: 0.6/s
* Area of effect size: 1.75
* Damage (on contact): 60 Acid

Acid puddle:
* Lifetime: 32 seconds
* Damage: 360 Acid/second
* Applies effect (on contact):
** Movement/vehicle speed modifier: 30%
** Duration: 2 seconds

Resistances:
*Explosion: 0/30%
|}

===Worms===

The Worms are natural allies of biters and spitters and will attack the player if they get close enough with an attack similar to spitters'. They act like static [[turret]]s and will not follow attackers. They rely on high damage, great range and splash damage to keep the player away from the worms and the nests they protect, but either one of these advantages can be overcome. Unlike other enemies, they are also highly resistant to fire. They will spit acid at the player, which can also leave acidic puddles on the ground that can still damage players and vehicles, as well as slow them both down and leave a brief acidic, damaging effect for a few seconds. However, placed buildings and tiles are unaffected by the acid puddles, but still take damage normally by the acid projectile.

Worms come in 4 sizes, their power increasing with size. Like biters and spitters, behemoth, big and medium worms spawning is influenced by the evolution factor. Worms are only created during enemy expansion when a certain evolution factor requirement is fulfilled. This is 0.3 for the medium worm, 0.5 for the big worm and 0.9 for the behemoth worm. Below these evolution factors, worms can only be created by the map generation. In map generation, the game restricts higher tier worms behind the distance from the starting point. The further away the player goes from the starting area, the stronger the worms become.

{| class="wikitable"
|-
! Picture !! Name !! Info
|-
| [[File:Small worm.png|center]] || Small worm
| A weak worm. It is still capable of killing the player unless it is targeted as priority.
* Health: 200
* Range: 25

Acid projectile:
* Attack speed: 0.65/s
* Area of effect size: 1.4
* Damage (on contact): 36 Acid

Acid puddle:
* Lifetime: 32 seconds
* Damage: 21.6 Acid/second
* Applies effect (on contact):
** Duration: 2 seconds
** Movement/vehicle speed modifier: 60%
|-
| [[File:Medium worm.png|center]] || Medium worm
| Medium worms are dangerous to even more advanced players. They should be handled with care.
* Health: 500
* Range: 30

Acid projectile:
* Attack speed: 0.65/s
* Area of effect size: 1.55
* Damage (on contact): 48 Acid

Acid puddle:
* Lifetime: 32 seconds
* Damage: 57.6 Acid/second
* Applies effect (on contact):
** Duration: 2 seconds
** Movement/vehicle speed modifier: 50%

Resistances:
*Explosion: 5/15%
*Fire: 2/50%
*Laser: 20%
*Physical: 5/0%
|-
| [[File:Big worm.png|center]] || Big worm
| Big worms are not as much more dangerous as resilient. They are almost immune to common gunfire of any sort.
* Health: 1500
* Range: 38

Acid projectile:
* Attack speed: 0.65/s
* Area of effect size: 1.75
* Damage (on contact): 72 Acid

Acid puddle:
* Lifetime: 32 seconds
* Damage: 259 Acid/second
* Applies effect (on contact):
** Duration: 2 seconds
** Movement/vehicle speed modifier: 40%

Resistances:
*Explosion: 10/30%
*Fire: 3/70%
*Laser: 50%
*Physical: 10/0%
|-
| [[File:Behemoth worm.png|center]] || Behemoth worm
| Behemoth worms are the most dangerous of worms. With twice as much health as big worms and a significantly higher range, they can even challenge experienced players.
* Health: 3000
* Range: 48

Acid projectile:
* Attack speed: 0.65/s
* Area of effect size: 2
* Damage (on contact): 96 Acid

Acid puddle:
* Lifetime: 32 seconds
* Damage: 691 Acid/second
* Applies effect (on contact):
** Duration: 2 seconds
** Movement/vehicle speed modifier: 30%

Resistances:
*Explosion: 10/30%
*Fire: 3/70%
*Laser: 80%
*Physical: 10/0%
|}

{| class="wikitable"
|-
! Picture !! Description
|-
| [[File:worm.gif]] || A worm's attack animation.
|-
|}

===Wrigglers {{SA}}===
Wrigglers are the biter equivalents of the planet Gleba, as they are standard melee enemies. True to their name, they flail and squirm their digits to move around and attack. Much like how biters and spitters spawn from nests, wrigglers spawn from egg rafts. Destroying egg rafts will spawn a group of more premature wrigglers, which are wrigglers that slowly lose health over time until they die. Strafers can launch flying versions of premature wrigglers at their target.

Killing strafers and stompers can summon even more premature wrigglers. The wrigglers that spawn from the corpses of strafers and stompers will match the size of the larger enemy that was killed. For example, killing a small strafer or stomper will spawn small premature wriggers, while killing a medium strafer or stomper will spawn medium premature wrigglers.

{| class="wikitable"
|-
! Picture !! Name !! Info
|-
| [[File:wriggler_small.png|center]] || Small wriggler
| The weakest and smallest of all wrigglers.
* Planet: Gleba
* Health: 100
* Damage: 3.75 Physical + 3.75 Poison
* Range: 1.1
* Speed: 34.6km/h

Resistances:
*Laser: 50%
|-
| [[File:wriggler_medium.png|center]] || Medium wriggler
| Slightly stronger and faster than small wrigglers, and can still pose a threat for weaker players.
* Planet: Gleba
* Health: 200
* Damage: 5 Physical + 5 Poison
* Range: 1.4
* Speed: 38.9km/h

Resistances:
*Laser: 50%
|-
| [[File:wriggler_big.png|center]] || Big wriggler
| The strongest and fastest of all wrigglers. Hatches from spoiled [[Pentapod egg|Pentapod eggs]] but won't be at full health when this happens.
* Planet: Gleba
* Health: 400
* Damage: 8 Physical + 8 Poison
* Range: 1.8
* Speed: 43.2km/h

Resistances:
*Laser: 50%
|}

===Strafers {{SA}}===
Native to the planet Gleba, strafers are large yet scrawny five-legged pentapod creatures with the unique behavior of constantly circling around players while attacking them, rather than making a beeline straight for the player, unlike any other type of enemy in the game. They will fire flying premature wrigglers toward the player, essentially adding more enemies to the fight.

{| class="wikitable"
|-
! Picture !! Name !! Info
|-
| [[File:strafer_small.png|center]] || Small strafer
| The weakest and smallest of all strafers.
* Planet: Gleba
* Health: 800
* Shooting speed: 0.5/s
* Range: 22.0
* Speed: 62.2km/h

Projectile:
*Range: 110
*Area of effect: 1
**Damage: 67.5 Explosive

Resistances:
*Laser: 50%
*Physical: 2/10%
|-
| [[File:strafer_medium.png|center]] || Medium strafer
| Slightly stronger and faster than the small strafer.
* Planet: Gleba
* Health: 1400
* Shooting speed: 0.5/s
* Range: 25.0
* Speed: 77.8km/h

Projectile:
*Range: 125
*Area of effect: 1
**Damage: 90 Explosive

Resistances:
*Laser: 50%
*Physical: 2/10%
|-
| [[File:strafer_big.png|center]] || Big strafer
| Strongest, fastest and most resilient of strafers.
* Planet: Gleba
* Health: 2400
* Shooting speed: 0.5/s
* Range: 28.0
* Speed: 98.3km/h

Projectile:
*Range: 140
*Area of effect: 1
**Damage: 144 Explosive

Resistances:
*Laser: 50%
*Physical: 2/10%
|}

===Stompers {{SA}}===
Native to the planet Gleba, stompers are extremely large, five-legged pentapod creatures with limbs that look similar to a starfish, and seem to have natural, jagged exoskeleton armor that provides high resistances to many types of damage. They are very powerful melee enemies that use their brute force to attack [[player]]s by simply stomping toward them, while spitting a close-ranged acid that slows down players and [[Vehicles]]. Their large size and high damage can destroy buildings instantly. They will spawn premature wrigglers upon death.

{| class="wikitable"
|-
! Picture !! Name !! Info
|-
| [[File:stomper_small.png|center]] || Small stomper
| The weakest and smallest of all stompers, but still powerful.
* Planet: Gleba
* Health: 3500
* Range: 5.8
* Speed: 41.6 km/h

Acid splash:
*Lifetime: 32 seconds
*Applied effects (on contact):
**Duration: 2 seconds
**Movement speed: 60% speed
**Vehicle speed: 30% speed
*Damage (on contact): 1.5/s Acid
*Area of effect size: 1.58
**Damage: 0.5 Acid

Resistances:
*Impact: 80%
*Laser: 80%
*Physical: 2/50%
|-
| [[File:stomper_medium.png|center]] || Medium stomper
| Larger and more dangerous version of a stomper.
* Planet: Gleba
* Health: 8000
* Range: 7.8
* Speed: 54.1km/h

Acid splash:
*Lifetime: 32 seconds
*Applied effects (on contact):
**Duration: 2 seconds
**Movement speed: 60% speed
**Vehicle speed: 30% speed
*Damage (on contact): 6/s Acid
*Area of effect size: 2.1
**Damage: 1 Acid

Resistances:
*Impact: 80%
*Laser: 80%
*Physical: 2/50%
|-
| [[File:stomper_big.png|center]] || Big stomper
| Larger, fastest and most dangerously aggressive version of a stomper.
* Planet: Gleba
* Health: 15000
* Range: 10.4
* Speed: 68.5km/h

Acid splash:
*Lifetime: 32 seconds
*Applied effects (on contact):
**Duration: 2 seconds
**Movement speed: 60% speed
**Vehicle speed: 30% speed
*Damage (on contact): 15.36/s Acid
*Area of effect size: 2.8
**Damage: 1.6 Acid

Resistances:
*Impact: 80%
*Laser: 80%
*Physical: 2/50%
|}

=== Demolishers {{SA}} ===
[[File:Demolisher_territory.png|thumb|300px|right|Small demolisher territory.]] Native to the planet Vulcanus, demolishers are horrendously large worm-like creatures that roam across the land and lava. Each individual demolisher patrols a defined territory, and building structures in their territory will disturb them and cause them to attack. In [[peaceful mode]], demolishers will not seek out buildings, but they still roam freely in their territory and may accidentally hit buildings.

Demolishers have three types of offense. On physical contact they do high damage to the player, and instantly destroy buildings and cliffs. They release a smoke cloud that slows the player and damages any nearby bots. And at range, they cause explosions to erupt from the ground, Due to their high damage resistances and extremely fast health regeneration, killing them requires advanced and upgraded weaponry, or massive quantities of bullets. They can also coil around the player to prevent them from escaping, and are completely immune to the [[slowdown capsule|slowdown capsule's]] effect.

Once killed, they leave behind remains similar to that of black volcanic rock, which contain [[tungsten ore]].

{| class="wikitable"
|-
! Picture !! Name !! Info
|-
| [[File:demolisher_small.png|center]] || Small demolisher
| The weakest and smallest of demolishers, but still very destructive.
* Planet: Vulcanus
* Health: 30000
* Regeneration: 2400/s

Resistances:
*Electric: 20/20%
*Explosion: 60% (head), 99% (body)
*Fire: 100%
*Impact: 100%
*Laser: 100%
*Physical: 50% (head), 5/50% (body)
*Poison: 10% (head), 50% (body)
|-
| [[File:demolisher_medium.png|center]] || Medium demolisher
| Larger and more dangerous version of a demolisher.
* Planet: Vulcanus
* Health: 100000
* Regeneration: 7800/s

Resistances:
*Electric: 20/20%
*Explosion: 60% (head), 99% (body)
*Fire: 100%
*Impact: 100%
*Laser: 100%
*Physical: 50% (head), 5/50% (body)
*Poison: 10% (head), 50% (body)
|-
| [[File:demolisher_big.png|center]] || Big demolisher
| The largest and most dangerous creature in the game.
* Planet: Vulcanus
* Health: 300000
* Regeneration: 24000/s

Resistances:
*Electric: 20/20%
*Explosion: 60% (head), 99% (body)
*Fire: 100%
*Impact: 100%
*Laser: 100%
*Physical: 50% (head), 5/50% (body)
*Poison: 10% (head), 50% (body)
|}

=== Nests ===
Nests in the wild will have their max health increase with evolution factor exponentially, up to 10 times their starting health.

Biter and spitter nests can be captured by firing a [[capture bot rocket]] from a [[rocket launcher]] at a nest. After the nest is captured, it must be given [[bioflux]] to maintain and continuously create [[biter egg]]s. If the nest is not maintained, it will slowly lose 1 health per second, but when fed, it will gain 1 health per second.

{| class="wikitable"
|-
! Picture !! Name !! Description
|-
| [[File:biter_nest.png|center]] || Biter spawner
|
* Planet: Nauvis
* Health: 350 (3500 at max evolution)

Resistances:
*Explosion: 5/0%
*Fire: 3/60%
*Physical: 2/15%
|-
| [[File:spitter_nest.png|center]] || Spitter spawner
|
* Planet: Nauvis
* Health: 350 (3500 at max evolution)

Resistances:
*Explosion: 5/0%
*Fire: 3/60%
*Physical: 2/15%
|-
| [[File:egg_raft.png|center]] || Egg raft
|
* Planet: Gleba
* Spawns a horde of premature wrigglers when destroyed.
* Health: 500 (5000 at max evolution)

Resistances:
*Explosive: 5/15%
*Fire: 3/60%
*Physical: 2/15%
|-
| [[File:egg_raft_small.png|center]] || Small egg raft
|
* Planet: Gleba
* Spawns a horde of premature wrigglers when destroyed.
* Health: 100 (1000 at max evolution)

Resistances:
*Explosive: 5/15%
*Fire: 3/60%
*Physical: 2/15%
|}

=== Expansions ===
[[map generator|By default]], enemies on Nauvis and Gleba {{SA}} try to expand into "unclaimed" territory to create new bases.

The game assigns a score to every [[Map structure#Chunk|chunk]] in a 7 chunk radius around existing spawners. Only chunks with land are considered on Nauvis, and only chunks with marsh are considered on Gleba. This score starts at 1.0 and is penalized by player structures and enemy spawners inside and near the chunk, to a minimum of 0.0.

Every 60 to 4 minutes, the game selects a chunk at random as the target for an expansion attempt, weighted by the chunk scores. Then 5 to 20 enemy units from the closest spawners assemble into an expansion group and walk to the expansion target. The time between expansion attempts and the size of expansion groups is random, but weighted by evolution factor.

When the expansion group reaches its target, each unit will begin dying in sequence to randomly create a spawner or a worm after some delay. This destroys any entities in the way, including members of the expansion group. Any unit can create any spawner or worm that is native to the planet.

* Biter nest, spitter nest and the four sizes of worms can only spawn on land tiles, on Nauvis.
* {{SA}} Egg raft and small egg raft can only spawn on marsh tiles, on Gleba.
* Medium worm, big worm and behemoth worm can only spawn when evolution factor is over 0.3, 0.5, and 0.9 respectively. [https://gist.github.com/Bilka2/aa88490c23124a6f214c02c73a368aa7]

==Defense==
[[File:kills_gui.png|thumb|220px|right|"Kills" tab on the [[production statistics]] screen.]]Nests spawn biters and spitters freely. However, biters and spitters will only aggressively engage the player's factory if the pollution cloud of the factory reaches a nest because pollution is consumed to send biters or spitters to join the next attack. Every 1 to 10 minutes (random) the mustered biters launch an attack. If not all biters have arrived at the rendezvous point by that time, they will wait up to an additional 2 minutes for stragglers. The attack then proceeds to their target over the shortest path possible, accounting for terrain, but not for player entities that could pose an obstacle (like [[wall]]s).

If there is a clear path somewhere around those obstacles, the biters will attempt to go around. If there is no clear passage or a clear passage would mean deviating too far from the original course, the biters will attack whatever is in their way to go through. This can be exploited to an extent; creating mazes at regular intervals along a barrier can direct the biters through a gauntlet not dissimilar to tower defense.

However, if a biter comes in proximity of a [[Military units and structures|military unit or structure]], it will prioritize these and attempt to immediately attack them instead, again trying to reach the new target over the shortest possible path with no too great detours, if possible.

==Evolution==
[[File:Evolution Biters.png|thumb|right|400px|Spawn chances of biters from biter spawners by evolution factor.]]
[[File:Evolution Spitters.png|thumb|right|400px|Spawn chances of spitters from spitter spawners by evolution factor.]]
[[File:Evolution Weights.png|thumb|right|400px|Weight graph of both spawners by evolution factor. The values shown are primarily for indicating when certain types start and stop spawning, for actual chances refer to the tables or other charts.]]
The evolution factor is a global variable that determines what kind of biters will be spawned. You can check the variable in the dev console via the following command (does not disable achievements):

/evolution

The evolution factor goes from 0 (not evolved at all) to 1 (maximal evolution). The evolution factor can only increase.

This command also provides percentages for the three sources; each one is the percent of the (unsquashed) total evolution that is contributed by that source.

Besides choosing what kind of biter will be spawned, the evolution factor also influences the spawning interval. This interval (<code>spawning_cooldown</code> in the <code>enemy-spawner</code> definition) is interpolated between 360 (0 evolution) and 150 (1 evolution) game ticks (= 6 to 2.5 seconds).

=== Methods of increasing ===

The evolution factor is increased by three kinds of events:

* The passage of time very slightly increases the evolution factor.
* The global [[Pollution|pollution production]] increases the evolution factor.
* Destroying [[Enemies#Nests|nests]] significantly increases the evolution factor.

The default settings are:

{| class="wikitable"
!Source per
!Variable in <code>enemy_evolution</code>
!Evolution increase
!Pollution equivalent
|-
| [[Time#Seconds|Second]] || <code>time_factor</code> || 0.000004 || 267/minute
|-
| Destroyed enemy spawner || <code>destroy_factor</code> || 0.002 || 2222
|-
| 1 Pollution unit || <code>pollution_factor</code> || 0.0000009 || 1
|}
Note that all spawners (not worms) generate the same amount of evolution when destroyed.

These values can be set during [[Map_generator#Enemy|world generation]]: the values in the dialog box are multiplied by 10^-7 for time and pollution, and 10^-5 for spawner destruction. In game, they can be found in <code>game.map_settings.enemy_evolution</code>, though checking or modifying them is considered using cheats.

Pollution production is the total pollution produced by [[Pollution#Polluters|buildings]], not the pollution spreading on the map, so it is not reduced by trees or other absorbers.
e.g. : 10 boilers produce 300 pollution in one minute, raising the evolution factor by around 0.00027 in that minute.

After totaling up all the evolution from these sources, this quantity is squashed to fit in the range <code>[0, 1)</code> by applying <code>evolution_factor = total_evolution / (1 + total_evolution)</code>.

Equivalently, marginal increases in evolution are reduced by multiplying the increase by <code>(1 - evolution_factor)²</code>. So for instance destroying enemy spawners in the beginning of the game results in increase of evolution factor by 0.002 while doing this when the evolution factor is 0.5 the increase is only 0.0005.

This also means that the evolution factor approaches 1 asymptotically - generally, increases past 0.9 or so are ''very'' slow and the number never actually reaches 1.0.

{| class="wikitable"
!Evolution factor
!Pollution equivalent
!Appearance
|-
| 10% || 123k ||
|-
| 20% || 278k || Medium Biter
|-
| 25% || 370k || Small Spitter
|-
| 30% || 476k ||
|-
| 40% || 741k || Medium Spitter
|-
| 50% || 1.111M || Big Biter, Big Spitter
|-
| 60% || 1.667M ||
|-
| 70% || 2.592M ||
|-
| 80% || 4.444M ||
|-
| 90% || 10M || Behemoth Biter, Behemoth Spitter
|-
| 95% || 21M ||
|-
| 99% || 110M ||
|}

=== Spawn chances by evolution factor ===

The probability charts show the chances of each type of biter/spitter for each spawner at all evolution levels.

<div id="evoChecker"></div>

=== Advanced: Evolution factor components and computation ===
<div class="toccolours mw-collapsible mw-collapsed" style="width:calc(100%-400px); overflow:auto;">
This section has charts plotting the individual evolution factor components and discusses possibilities for manually estimating the evolution factor.
<div class="mw-collapsible-content">

[[File:Evolution_factor_by_time.png|400px|thumb|right|1. Single-component evolution factor increase with time]]
[[File:Evolution_factor_by_spawners.png|400px|thumb|right|2. Single-component evolution factor increase with destroyed spawners]]
[[File:Evolution_factor_by_pollution.png|400px|thumb|right|3. Single-component evolution factor increase with pollution]]

'''Notes'''

* Data from version 1.1.50.

* All charts end at approximately an evolution factor of 0.90.

* The calculation steps for time and spawner kills match those used by the game, so these charts should be accurate. The pollution chart assumes a pollution production of 1000 units per second, and due to the recursive nature of the chart values will slightly diverge at different pollution rates. The effect of this is negligible for any reasonable amount pollution production, however.

* Given that the game reports the actual evolution factor (console: <code>/evolution</code>) whenever the player wishes, these charts are intended primarily to help estimate the impact of planned base expansions and similar activities on the evolution factor's future development.

'''Comments'''

These charts (click to enlarge) represent the situation where each evolution factor component (time, pollution, destroyed spawners) is the ''only'' component contributing to the evolution factor in that entire game. They are therefore '''not realistic''', as in a typical game all three components will contribute, some at varying times and intensities.

Because of how contributions to the evolution factor (EF) are calculated (multiplied by <code>(1 - current EF)</code>), it is '''not''' possible to simply add the values indicated by these charts for a game's time passed, pollution generated, and / or spawners destroyed so far to retrieve the total evolution factor.

For example, if 24 hours have passed (single-component EF =~ 0.25), 200,000 pollution units were released (single-component EF =~ 0.15), and 400 spawners were destroyed (single-component EF =~ 0.45), the actual evolution factor will '''not''' be (0.25 + 0.15 + 0.45 =) ~0.85.

However, the evolution factor will always be '''less''' than the sum of all individual components as indicated by these charts, and '''at least''' as high as the highest individual component. Thus, using the values from above, the EF will be ''at least'' 0.35 and ''less than'' 0.85. A smarter approach is required to compute the current evolution factor.

'''Individual components'''

The individual components of evolution can be approximated from <code>/evolution</code>:

Given the evolution factor, the unsquashed evolution is <code>unsquashed = evolution_factor / (1 - evolution_factor)</code>. Multiply this by the percentage for a given component to get its approximate unsquashed contribution. Of course, total pollution and spawner kills can also be found on the [[Production_statistics|production statistics]] screen, and time passed can be found using the <code>/time</code> command, so it's not fully necessary.

The actual factors can be found in <code>game.forces.enemy.evolution_factor_by_time</code>, <code>...evolution_factor_by_killing_spawners</code>, and <code>...evolution_factor_by_pollution</code>, if you don't mind disabling achievements.

</div></div>

== Trivia ==
*Despite their drastically different origins, enemies from different planets will always act as allies against the player. They will even reside around each other's nests when not attacking players, even if the type of nest does not match that of the residing creature. Even demolishers will circle around nests without harming or destroying them. Since enemies only spawn on their respective planets, this is not normally seen in gameplay unless a [[biter egg]]{{SA}} or [[pentapod egg]]{{SA}} spoils after being brought to another planet or the enemies are placed near each other in the [[map editor]].

*Demolishers{{SA}} were originally designed for [[Fulgora]]{{SA}}, but was later moved to [[Vulcanus]]{{SA}} because it was too similar to the [https://en.wikipedia.org/wiki/Dune_(franchise) Dune franchise].

== Gallery ==
<gallery widths=270px heights=140px>
File:player_near_enemy_nests.png|The player near some enemy nests and worms.
File:player_worms_acid.png|The player among acid puddles created by attacking worms.
File:player_attacked_by_biters.png|Both the player and some buildings getting attacked by biters.
File:enemy_nests_mapgen.png|Enemy nests seen in a map generation preview (deathworld setting).
File:turret_wall_biters.png|Line of gun turrets defending against biters.
File:titlescreen_enemies.png|Enemies seen at the title screen.
File:gleba_pentapods_preview.png|Pentapod enemies seen on Gleba.

File:demolisher_chases_player.png|A demolisher chases the player on Vulcanus.
</gallery>

== History ==
{{history|2.0.18|
* Demolisher{{SA}} health bars will always be visible for at least 1 tick after they take any damage, even if they fully regenerate the damage in the same tick
}}

{{history|2.0.17|
* Gleba evolution is now more gradual. {{SA}}
* Small stomper moves more slowly and deals less damage. {{SA}}
* Stomper pentapod vision range is reduced from 40 to 30. {{SA}}
* Medium and big wriggler pentapod health is increased. {{SA}}
}}

{{history|2.0.7|
* Wrigglers, strafers, stompers and demolishers have been added with the [[Space Age]]{{SA}} expansion.
* Spawners will have their health increase with evolution (3500 with max evolution).
* Significantly increased medium, big and behemoth worm stats as well as their laser resistances.
}}

{{history|0.17.0|
* Behemoth worm added.}}

{{history|0.15.0|
* Increased the damage, range, and health of worms.
* Decreased health and resist of Behemoth biters.}}

{{history|0.13.10|
* Biters and other units won't become aggressive as a result of friendly-fire.}}

{{history|0.13.0|
* Big and behemoth enemies now spawn 50% slower.
* Changed the way evolution factor approaches the maximum (1).
** The addition of evolution factor was changed from addition * (1 - evolution) to addition * (1 - evolution)^2
** This means that the progress gets more slower towards the high values.}}

{{history|0.12.26|
* Running biters over with a vehicle will now anger them in peaceful mode.}}

{{history|0.12.0|
* Updated sounds for enemies.}}

{{history|0.11.17|
* Items dropped by enemies([[Archive:alien artifact|*]]) are now collected automatically and from longer distances.}}

{{history|0.11.6|
* Range of spitters is now 15, less than turrets.}}

{{history|0.11.0|
* Spitters added.
* Drawing of enemies optimised, so adding new colors does not impact VRAM.
* Blood splashes on death are now procedural.}}

{{history|0.9.0|
* Turrets no longer search for enemies when none are near.
* Biters can no longer destroy the shipwreck in the 3rd new hope campaign.}}

{{history|0.8.1|
* Further improvement to enemy AI.}}

{{history|0.8.0|
* Decreased the range of medium worm from 25 to 20.}}

{{history|0.7.2|
* Biter AI improved.}}

{{history|0.7.1|
* Peaceful mode added for freeplay.}}

{{history|0.7.0|
* Enemy creepers were replaced by small, medium and big biters.
* Enemy turrets were replaced by small, medium and big shooting worms.
* Enemies move and attack in groups.
* Enemies wander around their base when they have nothing to do.
* Enemies call for help when attacked.
* Enemies can create new bases.
* Enemies can now destroy all player creations they find.}}

{{history|0.1.0|
* Introduced, called 'creepers'}}

== See also ==
* [[Damage]]
* [[Pollution]]

{{EnvironmentNav}}

Enemies

2025-11-01T17:32:52Z

Zinc: Updated biter ranges to match Factoriopedia

{{Languages}}
{{Stub}}
[[File:biter_intro.png|175px|right]]'''Enemies''' are creatures that want to [[Damage|harm]] the [[player]]. They are the native inhabitants of the extraterrestrial worlds on which the player is operating. Enemies show up on the map as red dots.

On [[Nauvis]], the enemies are arthropods which live in organic nests. They are encountered in three species: Biters, Spitters, and Worms (though the nickname "Biters" is often used collectively for all of them).

More enemies can be encountered on other planets with the [[Space Age]] expansion. On the planet [[Gleba]]{{SA}}, there are pentapods which come in three variants: Wrigglers, Strafers, and Stompers. On the planet [[Vulcanus]]{{SA}}, there are the Demolishers.

Each species comes in a range of sizes, where larger specimens have more health and do more damage.

== Achievements ==
Enemies are directly connected to the following achievements:
{{Achievement|it-stinks-and-they-dont-like-it}}
{{Achievement|steamrolled}}
{{Achievement|art-of-siege}}
{{Achievement|keeping-your-hands-clean}}
{{Achievement|it-stinks-and-they-do-like-it}}
{{Achievement|get-off-my-lawn}}
{{Achievement|if-it-bleeds}}
{{Achievement|we-need-bigger-guns}}
{{Achievement|Size-doesnt-matter}}

==Creatures==
===Biters===
Biters are one of two main antagonists in the base game. They come in four sizes: small, medium, big and behemoth. In the beginning of a game, there will only be the small ones. With increasing [[pollution]], they will become bigger, related to the enemy's [[#Evolution|evolution]]. As common sense may suggest, their method of attack is a straightforward charge to "bite" things.

{| class="wikitable"
|-
! Picture !! Name !! Info
|-
| [[File:small_biter.png|center]] || Small biter
| Weakest of biters, can be easily killed with a pistol.
* Planet: Nauvis
* Health: 15
* Damage: 7 Physical
* Attack speed: 1.71/s
* Speed: 43.2km/h
* Range: 0.5
* Pollution to join attack: 4
|-
| [[File:medium_biter.png|center]] || Medium biter
| Stronger and slightly faster than the small biter. Can pose a problem for and even kill weaker players.
* Planet: Nauvis
* Health: 75
* Damage: 15 Physical
* Attack speed: 1.71/s
* Speed: 51.8km/h
* Range: 1
* Pollution to join attack: 20

[[Damage#Resistance|Resistances]]:
*Explosion: 0/10%
*Physical: 4/10%
|-
| [[File:big_biter.png|center]] || Big biter
| Dangerous, resistant to small arms. Can attack through walls, hitting objects directly behind them. Hatches from spoiled [[biter egg|biter eggs]], however it won't be at full health when this happens.
* Planet: Nauvis
* Health: 375
* Damage: 30 Physical
* Attack speed: 1.71/s
* Speed: 49.7km/h
* Range: 1.5
* Pollution to join attack: 80

Resistances:
*Explosion: 0/10%
*Physical: 8/10%
|-
| [[File:behemoth_biter.png|center]] || Behemoth biter
| Extremely durable and nearly immune to small arms, except for the strongest ordnance. Can attack through walls, hitting objects directly behind them.
* Planet: Nauvis
* Health: 3000
* Damage: 90 Physical
* Attack speed: 1.2/s
* Speed: 64.8km/h
* Range: 1.5
* Pollution to join attack: 400

Resistances:
*Explosion: 12/10%
*Physical: 12/10%

|}

===Spitters===
'''Spitters''' are much like [[Enemies#Biters|biters]] and only appear slightly later on in the game as the evolution factor increases. Their main difference from biters is their ranged attack. Using predictive aiming, they spit a stream of acid at enemies which leaves behind a puddle of acid where it hits the ground. Due to the spitters' predictive aiming, the acid stream can be dodged by suddenly changing walking directions or standing still.[https://factorio.com/blog/post/fff-279] Both the stream and the puddle of acid deal damage over time and slow down players and vehicles. Most entities of the game have a much lower resistance to acid than other damage types (including [[turret]]s and [[armor]]), so spitters are effectively more potent against the player and their factories. Their behavior and size classification are the same as with biters, but their health is universally lower and they are resistant exclusively against explosives, with no physical resistance.

{| class="wikitable"
|-
! Picture !! Name !! Info
|-
| [[File:small_spitter.png|center]] || Small spitter
| Weakest of spitters. Easy to kill with any weapon, but attacks at range.
* Planet: Nauvis
* Health: 10
* Range: 13
* Pollution to join attack: 4
* Speed: 40.0km/h

Acid projectile:
* Attack speed: 0.6/s
* Area of effect size: 1
* Damage (on contact): 12 Acid

Acid puddle:
* Lifetime: 32 seconds
* Damage: 7.2 Acid/second
* Applies effect (on contact):
** Movement/vehicle speed modifier: 60%
** Duration: 2 seconds

|-
| [[File:medium_spitter.png|center]] || Medium spitter
| Stronger and slower than the smaller version. Can pose a problem for and even kill weaker players.
* Planet: Nauvis
* Health: 50
* Range: 14
* Pollution to join attack: 12
* Speed: 35.6km/h

Acid projectile:
* Attack speed: 0.6/s
* Area of effect size: 1.25
* Damage (on contact): 24 Acid

Acid puddle:
* Lifetime: 32 seconds
* Damage: 28.8 Acid/second
* Applies effect (on contact):
** Movement/vehicle speed modifier: 50%
** Duration: 2 seconds

Resistances:
*Explosion: 0/10%
|-
| [[File:big_spitter.png|center]] || Big spitter
| An even bulkier spitter and so can take more damage.
* Planet: Nauvis
* Health: 200
* Range: 15
* Pollution to join attack: 30
* Speed: 32.4km/h

Acid projectile:
* Attack speed: 0.6/s
* Area of effect size: 1.35
* Damage (on contact): 36 Acid

Acid puddle:
* Lifetime: 32 seconds
* Damage: 130 Acid/second
* Applies effect (on contact):
** Movement/vehicle speed modifier: 40%
** Duration: 2 seconds

Resistances:
*Explosion: 0/15%
|-
| [[File:behemoth_spitter.png|center]] || Behemoth spitter
| The bulkiest of the spitters and so can take even more damage.
* Planet: Nauvis
* Health: 1500
* Range: 16
* Pollution to join attack: 200
* Speed: 32.4km/h

Acid projectile:
* Attack speed: 0.6/s
* Area of effect size: 1.75
* Damage (on contact): 60 Acid

Acid puddle:
* Lifetime: 32 seconds
* Damage: 360 Acid/second
* Applies effect (on contact):
** Movement/vehicle speed modifier: 30%
** Duration: 2 seconds

Resistances:
*Explosion: 0/30%
|}

===Worms===

The Worms are natural allies of biters and spitters and will attack the player if they get close enough with an attack similar to spitters'. They act like static [[turret]]s and will not follow attackers. They rely on high damage, great range and splash damage to keep the player away from the worms and the nests they protect, but either one of these advantages can be overcome. Unlike other enemies, they are also highly resistant to fire. They will spit acid at the player, which can also leave acidic puddles on the ground that can still damage players and vehicles, as well as slow them both down and leave a brief acidic, damaging effect for a few seconds. However, placed buildings and tiles are unaffected by the acid puddles, but still take damage normally by the acid projectile.

Worms come in 4 sizes, their power increasing with size. Like biters and spitters, behemoth, big and medium worms spawning is influenced by the evolution factor. Worms are only created during enemy expansion when a certain evolution factor requirement is fulfilled. This is 0.3 for the medium worm, 0.5 for the big worm and 0.9 for the behemoth worm. Below these evolution factors, worms can only be created by the map generation. In map generation, the game restricts higher tier worms behind the distance from the starting point. The further away the player goes from the starting area, the stronger the worms become.

{| class="wikitable"
|-
! Picture !! Name !! Info
|-
| [[File:Small worm.png|center]] || Small worm
| A weak worm. It is still capable of killing the player unless it is targeted as priority.
* Health: 200
* Range: 25

Acid projectile:
* Attack speed: 0.66/s
* Area of effect size: 1.4
* Damage (on contact): 36 Acid

Acid puddle:
* Lifetime: 32 seconds
* Damage: 21.6 Acid/second
* Applies effect (on contact):
** Duration: 2 seconds
** Movement/vehicle speed modifier: 60%
|-
| [[File:Medium worm.png|center]] || Medium worm
| Medium worms are dangerous to even more advanced players. They should be handled with care.
* Health: 500
* Range: 30

Acid projectile:
* Attack speed: 0.66/s
* Area of effect size: 1.55
* Damage (on contact): 48 Acid

Acid puddle:
* Lifetime: 32 seconds
* Damage: 57.6 Acid/second
* Applies effect (on contact):
** Duration: 2 seconds
** Movement/vehicle speed modifier: 50%

Resistances:
*Explosion: 5/15%
*Fire: 2/50%
*Laser: 20%
*Physical: 5/0%
|-
| [[File:Big worm.png|center]] || Big worm
| Big worms are not as much more dangerous as resilient. They are almost immune to common gunfire of any sort.
* Health: 1500
* Range: 38

Acid projectile:
* Attack speed: 0.66/s
* Area of effect size: 1.75
* Damage (on contact): 72 Acid

Acid puddle:
* Lifetime: 32 seconds
* Damage: 259 Acid/second
* Applies effect (on contact):
** Duration: 2 seconds
** Movement/vehicle speed modifier: 40%

Resistances:
*Explosion: 10/30%
*Fire: 3/70%
*Laser: 50%
*Physical: 10/0%
|-
| [[File:Behemoth worm.png|center]] || Behemoth worm
| Behemoth worms are the most dangerous of worms. With twice as much health as big worms and a significantly higher range, they can even challenge experienced players.
* Health: 3000
* Range: 48

Acid projectile:
* Attack speed: 0.66/s
* Area of effect size: 2
* Damage (on contact): 96 Acid

Acid puddle:
* Lifetime: 32 seconds
* Damage: 691 Acid/second
* Applies effect (on contact):
** Duration: 2 seconds
** Movement/vehicle speed modifier: 30%

Resistances:
*Explosion: 10/30%
*Fire: 3/70%
*Laser: 80%
*Physical: 10/0%
|}

{| class="wikitable"
|-
! Picture !! Description
|-
| [[File:worm.gif]] || A worm's attack animation.
|-
|}

===Wrigglers {{SA}}===
Wrigglers are the biter equivalents of the planet Gleba, as they are standard melee enemies. True to their name, they flail and squirm their digits to move around and attack. Much like how biters and spitters spawn from nests, wrigglers spawn from egg rafts. Destroying egg rafts will spawn a group of more premature wrigglers, which are wrigglers that slowly lose health over time until they die. Strafers can launch flying versions of premature wrigglers at their target.

Killing strafers and stompers can summon even more premature wrigglers. The wrigglers that spawn from the corpses of strafers and stompers will match the size of the larger enemy that was killed. For example, killing a small strafer or stomper will spawn small premature wriggers, while killing a medium strafer or stomper will spawn medium premature wrigglers.

{| class="wikitable"
|-
! Picture !! Name !! Info
|-
| [[File:wriggler_small.png|center]] || Small wriggler
| The weakest and smallest of all wrigglers.
* Planet: Gleba
* Health: 100
* Damage: 3.75 Physical + 3.75 Poison
* Range: 1.1
* Speed: 34.6km/h

Resistances:
*Laser: 50%
|-
| [[File:wriggler_medium.png|center]] || Medium wriggler
| Slightly stronger and faster than small wrigglers, and can still pose a threat for weaker players.
* Planet: Gleba
* Health: 200
* Damage: 5 Physical + 5 Poison
* Range: 1.4
* Speed: 38.9km/h

Resistances:
*Laser: 50%
|-
| [[File:wriggler_big.png|center]] || Big wriggler
| The strongest and fastest of all wrigglers. Hatches from spoiled [[Pentapod egg|Pentapod eggs]] but won't be at full health when this happens.
* Planet: Gleba
* Health: 400
* Damage: 8 Physical + 8 Poison
* Range: 1.8
* Speed: 43.2km/h

Resistances:
*Laser: 50%
|}

===Strafers {{SA}}===
Native to the planet Gleba, strafers are large yet scrawny five-legged pentapod creatures with the unique behavior of constantly circling around players while attacking them, rather than making a beeline straight for the player, unlike any other type of enemy in the game. They will fire flying premature wrigglers toward the player, essentially adding more enemies to the fight.

{| class="wikitable"
|-
! Picture !! Name !! Info
|-
| [[File:strafer_small.png|center]] || Small strafer
| The weakest and smallest of all strafers.
* Planet: Gleba
* Health: 800
* Shooting speed: 0.5/s
* Range: 22.0
* Speed: 62.2km/h

Projectile:
*Range: 110
*Area of effect: 1
**Damage: 67.5 Explosive

Resistances:
*Laser: 50%
*Physical: 2/10%
|-
| [[File:strafer_medium.png|center]] || Medium strafer
| Slightly stronger and faster than the small strafer.
* Planet: Gleba
* Health: 1400
* Shooting speed: 0.5/s
* Range: 25.0
* Speed: 77.8km/h

Projectile:
*Range: 125
*Area of effect: 1
**Damage: 90 Explosive

Resistances:
*Laser: 50%
*Physical: 2/10%
|-
| [[File:strafer_big.png|center]] || Big strafer
| Strongest, fastest and most resilient of strafers.
* Planet: Gleba
* Health: 2400
* Shooting speed: 0.5/s
* Range: 28.0
* Speed: 98.3km/h

Projectile:
*Range: 140
*Area of effect: 1
**Damage: 144 Explosive

Resistances:
*Laser: 50%
*Physical: 2/10%
|}

===Stompers {{SA}}===
Native to the planet Gleba, stompers are extremely large, five-legged pentapod creatures with limbs that look similar to a starfish, and seem to have natural, jagged exoskeleton armor that provides high resistances to many types of damage. They are very powerful melee enemies that use their brute force to attack [[player]]s by simply stomping toward them, while spitting a close-ranged acid that slows down players and [[Vehicles]]. Their large size and high damage can destroy buildings instantly. They will spawn premature wrigglers upon death.

{| class="wikitable"
|-
! Picture !! Name !! Info
|-
| [[File:stomper_small.png|center]] || Small stomper
| The weakest and smallest of all stompers, but still powerful.
* Planet: Gleba
* Health: 3500
* Range: 5.8
* Speed: 41.6 km/h

Acid splash:
*Lifetime: 32 seconds
*Applied effects (on contact):
**Duration: 2 seconds
**Movement speed: 60% speed
**Vehicle speed: 30% speed
*Damage (on contact): 1.5/s Acid
*Area of effect size: 1.58
**Damage: 0.5 Acid

Resistances:
*Impact: 80%
*Laser: 80%
*Physical: 2/50%
|-
| [[File:stomper_medium.png|center]] || Medium stomper
| Larger and more dangerous version of a stomper.
* Planet: Gleba
* Health: 8000
* Range: 7.8
* Speed: 54.1km/h

Acid splash:
*Lifetime: 32 seconds
*Applied effects (on contact):
**Duration: 2 seconds
**Movement speed: 60% speed
**Vehicle speed: 30% speed
*Damage (on contact): 6/s Acid
*Area of effect size: 2.1
**Damage: 1 Acid

Resistances:
*Impact: 80%
*Laser: 80%
*Physical: 2/50%
|-
| [[File:stomper_big.png|center]] || Big stomper
| Larger, fastest and most dangerously aggressive version of a stomper.
* Planet: Gleba
* Health: 15000
* Range: 10.4
* Speed: 68.5km/h

Acid splash:
*Lifetime: 32 seconds
*Applied effects (on contact):
**Duration: 2 seconds
**Movement speed: 60% speed
**Vehicle speed: 30% speed
*Damage (on contact): 15.36/s Acid
*Area of effect size: 2.8
**Damage: 1.6 Acid

Resistances:
*Impact: 80%
*Laser: 80%
*Physical: 2/50%
|}

=== Demolishers {{SA}} ===
[[File:Demolisher_territory.png|thumb|300px|right|Small demolisher territory.]] Native to the planet Vulcanus, demolishers are horrendously large worm-like creatures that roam across the land and lava. Each individual demolisher patrols a defined territory, and building structures in their territory will disturb them and cause them to attack. In [[peaceful mode]], demolishers will not seek out buildings, but they still roam freely in their territory and may accidentally hit buildings.

Demolishers have three types of offense. On physical contact they do high damage to the player, and instantly destroy buildings and cliffs. They release a smoke cloud that slows the player and damages any nearby bots. And at range, they cause explosions to erupt from the ground, Due to their high damage resistances and extremely fast health regeneration, killing them requires advanced and upgraded weaponry, or massive quantities of bullets. They can also coil around the player to prevent them from escaping, and are completely immune to the [[slowdown capsule|slowdown capsule's]] effect.

Once killed, they leave behind remains similar to that of black volcanic rock, which contain [[tungsten ore]].

{| class="wikitable"
|-
! Picture !! Name !! Info
|-
| [[File:demolisher_small.png|center]] || Small demolisher
| The weakest and smallest of demolishers, but still very destructive.
* Planet: Vulcanus
* Health: 30000
* Regeneration: 2400/s

Resistances:
*Electric: 20/20%
*Explosion: 60% (head), 99% (body)
*Fire: 100%
*Impact: 100%
*Laser: 100%
*Physical: 50% (head), 5/50% (body)
*Poison: 10% (head), 50% (body)
|-
| [[File:demolisher_medium.png|center]] || Medium demolisher
| Larger and more dangerous version of a demolisher.
* Planet: Vulcanus
* Health: 100000
* Regeneration: 7800/s

Resistances:
*Electric: 20/20%
*Explosion: 60% (head), 99% (body)
*Fire: 100%
*Impact: 100%
*Laser: 100%
*Physical: 50% (head), 5/50% (body)
*Poison: 10% (head), 50% (body)
|-
| [[File:demolisher_big.png|center]] || Big demolisher
| The largest and most dangerous creature in the game.
* Planet: Vulcanus
* Health: 300000
* Regeneration: 24000/s

Resistances:
*Electric: 20/20%
*Explosion: 60% (head), 99% (body)
*Fire: 100%
*Impact: 100%
*Laser: 100%
*Physical: 50% (head), 5/50% (body)
*Poison: 10% (head), 50% (body)
|}

=== Nests ===
Nests in the wild will have their max health increase with evolution factor exponentially, up to 10 times their starting health.

Biter and spitter nests can be captured by firing a [[capture bot rocket]] from a [[rocket launcher]] at a nest. After the nest is captured, it must be given [[bioflux]] to maintain and continuously create [[biter egg]]s. If the nest is not maintained, it will slowly lose 1 health per second, but when fed, it will gain 1 health per second.

{| class="wikitable"
|-
! Picture !! Name !! Description
|-
| [[File:biter_nest.png|center]] || Biter spawner
|
* Planet: Nauvis
* Health: 350 (3500 at max evolution)

Resistances:
*Explosion: 5/0%
*Fire: 3/60%
*Physical: 2/15%
|-
| [[File:spitter_nest.png|center]] || Spitter spawner
|
* Planet: Nauvis
* Health: 350 (3500 at max evolution)

Resistances:
*Explosion: 5/0%
*Fire: 3/60%
*Physical: 2/15%
|-
| [[File:egg_raft.png|center]] || Egg raft
|
* Planet: Gleba
* Spawns a horde of premature wrigglers when destroyed.
* Health: 500 (5000 at max evolution)

Resistances:
*Explosive: 5/15%
*Fire: 3/60%
*Physical: 2/15%
|-
| [[File:egg_raft_small.png|center]] || Small egg raft
|
* Planet: Gleba
* Spawns a horde of premature wrigglers when destroyed.
* Health: 100 (1000 at max evolution)

Resistances:
*Explosive: 5/15%
*Fire: 3/60%
*Physical: 2/15%
|}

=== Expansions ===
[[map generator|By default]], enemies on Nauvis and Gleba {{SA}} try to expand into "unclaimed" territory to create new bases.

The game assigns a score to every [[Map structure#Chunk|chunk]] in a 7 chunk radius around existing spawners. Only chunks with land are considered on Nauvis, and only chunks with marsh are considered on Gleba. This score starts at 1.0 and is penalized by player structures and enemy spawners inside and near the chunk, to a minimum of 0.0.

Every 60 to 4 minutes, the game selects a chunk at random as the target for an expansion attempt, weighted by the chunk scores. Then 5 to 20 enemy units from the closest spawners assemble into an expansion group and walk to the expansion target. The time between expansion attempts and the size of expansion groups is random, but weighted by evolution factor.

When the expansion group reaches its target, each unit will begin dying in sequence to randomly create a spawner or a worm after some delay. This destroys any entities in the way, including members of the expansion group. Any unit can create any spawner or worm that is native to the planet.

* Biter nest, spitter nest and the four sizes of worms can only spawn on land tiles, on Nauvis.
* {{SA}} Egg raft and small egg raft can only spawn on marsh tiles, on Gleba.
* Medium worm, big worm and behemoth worm can only spawn when evolution factor is over 0.3, 0.5, and 0.9 respectively. [https://gist.github.com/Bilka2/aa88490c23124a6f214c02c73a368aa7]

==Defense==
[[File:kills_gui.png|thumb|220px|right|"Kills" tab on the [[production statistics]] screen.]]Nests spawn biters and spitters freely. However, biters and spitters will only aggressively engage the player's factory if the pollution cloud of the factory reaches a nest because pollution is consumed to send biters or spitters to join the next attack. Every 1 to 10 minutes (random) the mustered biters launch an attack. If not all biters have arrived at the rendezvous point by that time, they will wait up to an additional 2 minutes for stragglers. The attack then proceeds to their target over the shortest path possible, accounting for terrain, but not for player entities that could pose an obstacle (like [[wall]]s).

If there is a clear path somewhere around those obstacles, the biters will attempt to go around. If there is no clear passage or a clear passage would mean deviating too far from the original course, the biters will attack whatever is in their way to go through. This can be exploited to an extent; creating mazes at regular intervals along a barrier can direct the biters through a gauntlet not dissimilar to tower defense.

However, if a biter comes in proximity of a [[Military units and structures|military unit or structure]], it will prioritize these and attempt to immediately attack them instead, again trying to reach the new target over the shortest possible path with no too great detours, if possible.

==Evolution==
[[File:Evolution Biters.png|thumb|right|400px|Spawn chances of biters from biter spawners by evolution factor.]]
[[File:Evolution Spitters.png|thumb|right|400px|Spawn chances of spitters from spitter spawners by evolution factor.]]
[[File:Evolution Weights.png|thumb|right|400px|Weight graph of both spawners by evolution factor. The values shown are primarily for indicating when certain types start and stop spawning, for actual chances refer to the tables or other charts.]]
The evolution factor is a global variable that determines what kind of biters will be spawned. You can check the variable in the dev console via the following command (does not disable achievements):

/evolution

The evolution factor goes from 0 (not evolved at all) to 1 (maximal evolution). The evolution factor can only increase.

This command also provides percentages for the three sources; each one is the percent of the (unsquashed) total evolution that is contributed by that source.

Besides choosing what kind of biter will be spawned, the evolution factor also influences the spawning interval. This interval (<code>spawning_cooldown</code> in the <code>enemy-spawner</code> definition) is interpolated between 360 (0 evolution) and 150 (1 evolution) game ticks (= 6 to 2.5 seconds).

=== Methods of increasing ===

The evolution factor is increased by three kinds of events:

* The passage of time very slightly increases the evolution factor.
* The global [[Pollution|pollution production]] increases the evolution factor.
* Destroying [[Enemies#Nests|nests]] significantly increases the evolution factor.

The default settings are:

{| class="wikitable"
!Source per
!Variable in <code>enemy_evolution</code>
!Evolution increase
!Pollution equivalent
|-
| [[Time#Seconds|Second]] || <code>time_factor</code> || 0.000004 || 267/minute
|-
| Destroyed enemy spawner || <code>destroy_factor</code> || 0.002 || 2222
|-
| 1 Pollution unit || <code>pollution_factor</code> || 0.0000009 || 1
|}
Note that all spawners (not worms) generate the same amount of evolution when destroyed.

These values can be set during [[Map_generator#Enemy|world generation]]: the values in the dialog box are multiplied by 10^-7 for time and pollution, and 10^-5 for spawner destruction. In game, they can be found in <code>game.map_settings.enemy_evolution</code>, though checking or modifying them is considered using cheats.

Pollution production is the total pollution produced by [[Pollution#Polluters|buildings]], not the pollution spreading on the map, so it is not reduced by trees or other absorbers.
e.g. : 10 boilers produce 300 pollution in one minute, raising the evolution factor by around 0.00027 in that minute.

After totaling up all the evolution from these sources, this quantity is squashed to fit in the range <code>[0, 1)</code> by applying <code>evolution_factor = total_evolution / (1 + total_evolution)</code>.

Equivalently, marginal increases in evolution are reduced by multiplying the increase by <code>(1 - evolution_factor)²</code>. So for instance destroying enemy spawners in the beginning of the game results in increase of evolution factor by 0.002 while doing this when the evolution factor is 0.5 the increase is only 0.0005.

This also means that the evolution factor approaches 1 asymptotically - generally, increases past 0.9 or so are ''very'' slow and the number never actually reaches 1.0.

{| class="wikitable"
!Evolution factor
!Pollution equivalent
!Appearance
|-
| 10% || 123k ||
|-
| 20% || 278k || Medium Biter
|-
| 25% || 370k || Small Spitter
|-
| 30% || 476k ||
|-
| 40% || 741k || Medium Spitter
|-
| 50% || 1.111M || Big Biter, Big Spitter
|-
| 60% || 1.667M ||
|-
| 70% || 2.592M ||
|-
| 80% || 4.444M ||
|-
| 90% || 10M || Behemoth Biter, Behemoth Spitter
|-
| 95% || 21M ||
|-
| 99% || 110M ||
|}

=== Spawn chances by evolution factor ===

The probability charts show the chances of each type of biter/spitter for each spawner at all evolution levels.

<div id="evoChecker"></div>

=== Advanced: Evolution factor components and computation ===
<div class="toccolours mw-collapsible mw-collapsed" style="width:calc(100%-400px); overflow:auto;">
This section has charts plotting the individual evolution factor components and discusses possibilities for manually estimating the evolution factor.
<div class="mw-collapsible-content">

[[File:Evolution_factor_by_time.png|400px|thumb|right|1. Single-component evolution factor increase with time]]
[[File:Evolution_factor_by_spawners.png|400px|thumb|right|2. Single-component evolution factor increase with destroyed spawners]]
[[File:Evolution_factor_by_pollution.png|400px|thumb|right|3. Single-component evolution factor increase with pollution]]

'''Notes'''

* Data from version 1.1.50.

* All charts end at approximately an evolution factor of 0.90.

* The calculation steps for time and spawner kills match those used by the game, so these charts should be accurate. The pollution chart assumes a pollution production of 1000 units per second, and due to the recursive nature of the chart values will slightly diverge at different pollution rates. The effect of this is negligible for any reasonable amount pollution production, however.

* Given that the game reports the actual evolution factor (console: <code>/evolution</code>) whenever the player wishes, these charts are intended primarily to help estimate the impact of planned base expansions and similar activities on the evolution factor's future development.

'''Comments'''

These charts (click to enlarge) represent the situation where each evolution factor component (time, pollution, destroyed spawners) is the ''only'' component contributing to the evolution factor in that entire game. They are therefore '''not realistic''', as in a typical game all three components will contribute, some at varying times and intensities.

Because of how contributions to the evolution factor (EF) are calculated (multiplied by <code>(1 - current EF)</code>), it is '''not''' possible to simply add the values indicated by these charts for a game's time passed, pollution generated, and / or spawners destroyed so far to retrieve the total evolution factor.

For example, if 24 hours have passed (single-component EF =~ 0.25), 200,000 pollution units were released (single-component EF =~ 0.15), and 400 spawners were destroyed (single-component EF =~ 0.45), the actual evolution factor will '''not''' be (0.25 + 0.15 + 0.45 =) ~0.85.

However, the evolution factor will always be '''less''' than the sum of all individual components as indicated by these charts, and '''at least''' as high as the highest individual component. Thus, using the values from above, the EF will be ''at least'' 0.35 and ''less than'' 0.85. A smarter approach is required to compute the current evolution factor.

'''Individual components'''

The individual components of evolution can be approximated from <code>/evolution</code>:

Given the evolution factor, the unsquashed evolution is <code>unsquashed = evolution_factor / (1 - evolution_factor)</code>. Multiply this by the percentage for a given component to get its approximate unsquashed contribution. Of course, total pollution and spawner kills can also be found on the [[Production_statistics|production statistics]] screen, and time passed can be found using the <code>/time</code> command, so it's not fully necessary.

The actual factors can be found in <code>game.forces.enemy.evolution_factor_by_time</code>, <code>...evolution_factor_by_killing_spawners</code>, and <code>...evolution_factor_by_pollution</code>, if you don't mind disabling achievements.

</div></div>

== Trivia ==
*Despite their drastically different origins, enemies from different planets will always act as allies against the player. They will even reside around each other's nests when not attacking players, even if the type of nest does not match that of the residing creature. Even demolishers will circle around nests without harming or destroying them. Since enemies only spawn on their respective planets, this is not normally seen in gameplay unless a [[biter egg]]{{SA}} or [[pentapod egg]]{{SA}} spoils after being brought to another planet or the enemies are placed near each other in the [[map editor]].

*Demolishers{{SA}} were originally designed for [[Fulgora]]{{SA}}, but was later moved to [[Vulcanus]]{{SA}} because it was too similar to the [https://en.wikipedia.org/wiki/Dune_(franchise) Dune franchise].

== Gallery ==
<gallery widths=270px heights=140px>
File:player_near_enemy_nests.png|The player near some enemy nests and worms.
File:player_worms_acid.png|The player among acid puddles created by attacking worms.
File:player_attacked_by_biters.png|Both the player and some buildings getting attacked by biters.
File:enemy_nests_mapgen.png|Enemy nests seen in a map generation preview (deathworld setting).
File:turret_wall_biters.png|Line of gun turrets defending against biters.
File:titlescreen_enemies.png|Enemies seen at the title screen.
File:gleba_pentapods_preview.png|Pentapod enemies seen on Gleba.

File:demolisher_chases_player.png|A demolisher chases the player on Vulcanus.
</gallery>

== History ==
{{history|2.0.18|
* Demolisher{{SA}} health bars will always be visible for at least 1 tick after they take any damage, even if they fully regenerate the damage in the same tick
}}

{{history|2.0.17|
* Gleba evolution is now more gradual. {{SA}}
* Small stomper moves more slowly and deals less damage. {{SA}}
* Stomper pentapod vision range is reduced from 40 to 30. {{SA}}
* Medium and big wriggler pentapod health is increased. {{SA}}
}}

{{history|2.0.7|
* Wrigglers, strafers, stompers and demolishers have been added with the [[Space Age]]{{SA}} expansion.
* Spawners will have their health increase with evolution (3500 with max evolution).
* Significantly increased medium, big and behemoth worm stats as well as their laser resistances.
}}

{{history|0.17.0|
* Behemoth worm added.}}

{{history|0.15.0|
* Increased the damage, range, and health of worms.
* Decreased health and resist of Behemoth biters.}}

{{history|0.13.10|
* Biters and other units won't become aggressive as a result of friendly-fire.}}

{{history|0.13.0|
* Big and behemoth enemies now spawn 50% slower.
* Changed the way evolution factor approaches the maximum (1).
** The addition of evolution factor was changed from addition * (1 - evolution) to addition * (1 - evolution)^2
** This means that the progress gets more slower towards the high values.}}

{{history|0.12.26|
* Running biters over with a vehicle will now anger them in peaceful mode.}}

{{history|0.12.0|
* Updated sounds for enemies.}}

{{history|0.11.17|
* Items dropped by enemies([[Archive:alien artifact|*]]) are now collected automatically and from longer distances.}}

{{history|0.11.6|
* Range of spitters is now 15, less than turrets.}}

{{history|0.11.0|
* Spitters added.
* Drawing of enemies optimised, so adding new colors does not impact VRAM.
* Blood splashes on death are now procedural.}}

{{history|0.9.0|
* Turrets no longer search for enemies when none are near.
* Biters can no longer destroy the shipwreck in the 3rd new hope campaign.}}

{{history|0.8.1|
* Further improvement to enemy AI.}}

{{history|0.8.0|
* Decreased the range of medium worm from 25 to 20.}}

{{history|0.7.2|
* Biter AI improved.}}

{{history|0.7.1|
* Peaceful mode added for freeplay.}}

{{history|0.7.0|
* Enemy creepers were replaced by small, medium and big biters.
* Enemy turrets were replaced by small, medium and big shooting worms.
* Enemies move and attack in groups.
* Enemies wander around their base when they have nothing to do.
* Enemies call for help when attacked.
* Enemies can create new bases.
* Enemies can now destroy all player creations they find.}}

{{history|0.1.0|
* Introduced, called 'creepers'}}

== See also ==
* [[Damage]]
* [[Pollution]]

{{EnvironmentNav}}

Infobox:Landfill

2025-10-31T17:43:20Z

Zinc: To match the in-game tooltip.

{{Infobox
|image = landfill_tile.gif
|map-color = 382218
|prototype-type = tile
|internal-name = landfill
|stack-size = 100
|recipe = Time, 0.5 + Stone, 50
|category = Logistics
|producers = Assembling machine + Player
|changed-by-space-age-mod = yes
|space-age-consumers = Artificial yumako soil + Artificial jellynut soil + Agricultural tower + Biochamber
| required-technologies = Landfill
| extra1 = {{Translation|Used to build Landfill.}}
|recycling-results = Landfill, 0.25
|rocket-capacity = 20 (0.2 {{Translation|stacks}})
}}<noinclude>[[Category:Infobox page]]</noinclude>