Land mine
Revision as of 16:34, 9 April 2017 by SilentShadowSeeker (talk | contribs) (Such is the result of me being lazy, and having 107 construction bots.)
Land mines are the only passive defense system. The placement of landmines is not bound to the "square" raster, they can be placed "free". A land mine does enough damage to kill 1 Small Biter.
Being the passive defence that it is; if the aliens are not already aggroed to you, (provided you have enough land mines and stay out of the way of the explosions) you can kill every single one without them noticing a thing.