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UFO: Alien Invasion is a futuristic, squad-based and turn-based strategy game set in 2084, heavily inspired by X-COM, but not a sequel or a remake. The game uses a heavily modified version of the Quake II engine. The player controls the secret organization PHALANX and has to construct bases around the globe, and hire soldiers, workers and scientists to fight off an alien invasion. Base construction and the tracking of alien threats takes place on a world map (Geoscape mode), and the fighting is turn-based and done on a 3D map where the player controls a squad of soldiers (Tactical mode). Major tasks include protecting civilians, and capturing aliens and their technology in order to get money and better weapons.

Multiplayer is supported over LAN and internet, with head-to-head sessions, but also cooperative games with a maximum of 6 teams playing, against each other, or AI-controlled opponents. The game is free software, licensed under the GNU General Public License.


UFO: Alien Invasion Windows Europe at night
UFO: Alien Invasion Windows Don't use a flamethrower in small room - "friendly fire" is unwanted.
UFO: Alien Invasion Windows Arming one interceptor
UFO: Alien Invasion Windows Town fight

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Alternate Titles

  • "UFO:AI" -- Abbreviated version

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Critic Reviews Windows Jul 27, 2010 5 Stars5 Stars5 Stars5 Stars5 Stars 100 Windows May 29, 2006 91 out of 100 91
Plné Hry Windows May 23, 2008 90 out of 100 90
Softonic Windows Mar 25, 2008 4.5 Stars4.5 Stars4.5 Stars4.5 Stars4.5 Stars 90
Clubic Windows Jul 20, 2010 4 Stars4 Stars4 Stars4 Stars4 Stars 80
Inside Mac Games (IMG) Macintosh Feb 26, 2009 7.5 out of 10 75


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Contributed to by Sciere (771887) and Joel Segerbäck (656)
atari saboteur