Glossary

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This page acts as a general glossary of all terms used in Factorio and its community. We recommend searching the page with CTRL + F to find specific terms. The page is also organized alphabetically.

Additionally, you can click a letter below to be taken to that letter in the list, if you wish to search manually.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

A

Ammo 
Ammunition, used for guns/rocket launchers/turrets, etc.
Angel's mods 
A term referring to the mods made by user Arch666Angel, a popular modder who makes extremely popular difficulty/complexity mods that complement bob's mods.
Angelbobs 
A community term that means a game with both Angel's mods and Bob's mods installed.
Assembly 
Another word for an Assembling machine.

B

Backed-up 
Refers to a machine having no output, and so the input channel fills up. Can also refer to belts not moving due to being full of items. This is not necessarily a bad thing.
Belt balancer 
This is a belt setup that balances multiple belts to contain the same amount of resources, to maximize throughput. See Balancers.
Belt compression 
This term refers to ensuring that all items on a belt are right after each other, to ensure no space is wasted and highest throughput.
Bob's mods 
A term referring to the mods made by user bobingabout, a popular modder who makes extremely popular difficulty/complexity mods that complement Angel's mods.
Bots 
Shorthand version for Construction robot or Logistic robot.
Bottleneck 
A term that means a single point where resources are constrained, such as a slow part of a belt that slows down everything.
Bus 
Short for Main bus.

C

Capacity 
Maximum amount of items/fluid that can exist within something.
Cracktorio 
A community term referring to the addictive qualities of Factorio, jokingly comparing the game to crack cocaine.

D

Death world 
A world generation configuration that results in a large quantity of Enemies, to increase the game's difficulty.
Double header 
This is a term that refers to a train with Diesel locomotives on both ends, making the train capable of driving in both directions. Opposite of a single header, or standard train.

E

Entity 
Anything that can be manipulated in-game. Nearly everything in factorio is an entity. Any device, items, trees... Even the player is just an entity.

F

FFF 
The weekly blog that the developers make to talk about the development of Factorio. Expanded, it is Factorio Friday Facts, posted every Friday.
FPS 
Visual rendering speed, "Frames per second". When this is reduced beneath 60, the game may stutter visually, jitter, or otherwise appear unstable. Low FPS will not necessarily result in low UPS, but they are loosely tied together.
Factorissimo 
A popular mod that allows for factories to be built within buildings added by the mod.
Fuel 
Refers to any burnable item that can be used to fuel burner devices, such as wood, coal, etc.

G

Gigabase 
An even larger megabase, typically has RPM counts > 10.

I

Inventory 
The ability for an entity to hold items within it. Almost all entities have inventories.
Item 
An item is another form of entity, representing the un-built version of a machine, tools, etc. Typically, items are found on belts, in the player's inventory, and inside machines. Items can be provided to recipes to create other items.

L

Lane balancer 
This is a belt setup that balances the two lanes on a belt to be equal, to maximize throughput. See Balancers.

M

Main bus 
The opposite of spaghetti, this refers to placing multiple belts side by side containing one resource, and branching off of it in order to create setups. Allows for organized layout of resource transportation.
Mats 
Shorthand for materials.
Megabase 
A community term referring to a significantly large base that has been built over a significant time/effort. Often, these bases are quantified in terms of rockets per minute, or "RPM". A base typically is considered a megabase when it can maintain 1 RPM.
Mod 
This term refers to a script or collection of scripts that change how the game acts, adds new items/entities, etc.
Modpack 
A community term referring to a collection of mods that work well together.

Q

QOL 
Quality of life, often refers to mods that increase ease of play.

R

Roundabout 
This term refers to a type of path for trains, to allow the trains to enter the circle, and exit onto the exit rail that they path to. Generally recommended against, due to throughput and self collision issues.
RPM 
Shorthand for rockets per minute, usually used to meassure the size of very big bases, see Megabase and Gigabase.

S

Scenario 
A map that has been saved via the Map editor. Special scripting can be added to make simple "events".
Sideloading 
This is a commonly used term that refers to running the end of a Transport belt into the side of another, so that only the lane on the side of the belt that the other belt is on is filled. This is typically done to create a belt that carries two different resources side-by-side on the same belt.
Spaghetti 
A community term referring to the "spaghetti" look of many belts/entities placed in a disorganized fashion. Typically created by new players to Factorio. Generally, it will be moved away from as soon as the player realizes the logistical problems it causes.
Speedrun 
A term referring to attempting to quickly finish the game as soon as possible. At the time of this writing, the record is just over an hour.

T

Throughput 
A term that refers to the maximum amount of resources that can travel through something (such as a belt) in a certain amount of time. Usually quantified in items per second.
Tick 
The smallest measurable amount of time in Factorio. There are 60 ticks per second (when running at 60 UPS), and 3600 ticks in a minute.
Tile 
A piece of map. It is not really known how big it is, but for simplifying things we can assume that a tile is a quadratic with side of 1 meter.
Time 
Game time is normally identical with real time, one second in the game is one second in reality, but it can be faster or slower. For example, when the calculations for an update takes longer than a tick, the game slows down (aka UPS). Alternatively, a mod can provide ways to let the game run faster.
Turret 
Stationary defense weapon. There are three types of turrets in Factorio, the Laser turret, Gun turret, and Flamethrower turret.

U

UPS 
Internal clock speed. When scripting or the game's actions reduces this beneath 60, the game will appear to be running in slow motion. This is commonly a concern on megabases or with many mods active. This can never be significantly higher than 60, unless the game's speed is modified by script.

W

Wube 
The company based in the Czech Republic that develops Factorio.