- playdeb.net games/ufo-alien-invasionUFO: Alien Invasion is a strategy game featuring turn-based tactical combat against hostile alien forces (human or computer controlled)...
- linuxmasterclub.com ufo-alien-invasion/UFO: Alien Invasion is a game that is a mixture of real-time strategy and tactical RPG, continuing the ideas and traditions of X-COM.
- tropedia.fandom.com wiki/UFO_Alien_InvasionUFO: Alien Invasion is a Quake II engine-based open source freeware strategy game that is effectively a direct remake of X-COM, though it adds several new...
- libregamewiki.org UFO:Alien_InvasionUFO: Alien Invasion is a hybrid turn-based strategy game and real time strategy game with the objection to defend earth from an alien invasion.
- gamesnostalgia.com game/ufo-alien-invasionDownload the original UFO: Alien Invasion for Windows, a retro game ready to play, packed for Windows. Only on GamesNostalgia.
- f2pg.com ufo-alien-invasion/You can even use them against your friends with the multiplayer functionality. You can play UFO: Alien Invasion with your friends via LAN or Internet connection.
- mobygames.com game/28654/ufo-alien-invasion/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.
- megagames.com freeware/ufo-alien-invasion-v231-…UFO: Alien Invasion is a squad-based tactical strategy game in the tradition of the old X-COM PC games, but with a twist.