|UFO: Alien Invasion|
|Developer:||UFO: Alien Invasion Team|
|Genre:||First person shooter|
|License:||GNU General Public License|
A free variant of X-Com: UFO Defense.
Use of Procedural Content Generation Methods
UFO: Alien Invasion is an interesting example of limited PCG married with an FPS engine (a modified Quake 2 engine). Apart of random maps constructed from 3d models (in various stages of brokenness in most versions) they have randomly generated (but according to life-like rules) alien teams (number, position, alien stats, equipment) based on map kind and game stage. The latter, together with fancy AI that makes use of the equipment, makes fixed maps less predictable.
UFO: Alien Invasion - Wikipedia entry for UFO: Alien Invasion