UFO: ALIEN INVASION is a strategy game featuring tactical combat against hostile alien forces which are about to infiltrate earth at this very moment. You are in command of a small special unit which has been founded to face the alien strike force. To be successful on the long run, you will also have to have a research team study the aliens and their technologies in order to learn as much as possible about their technology, their goals and the aliens themselves.

'UFO: Alien Invasion' is heavily inspired by the 'X-COM' series by Mythos and Microprose. The first game of the series, 'UFO DEFENSE', became a classic and, in our honest opinion, is one of the best games ever made. 'UFO: Alien Invasion' is neither a sequel nor a remake of 'UFO DEFENSE' - we simply had the urge to create a similar strategy game, which will hopefully be as entertaining as the original was for the players (and for the developers, of course ;) ).

Features:
The game is turn-based. Well, this might sound somewhat old school now, but trust us: turn-based games are fun!
Each member of your squad has a limited number so called "time units" each round, which are consumed when you order the unit to walk, to fire a weapon or to perform any of the other miscellaneous actions. When all your forces are out of time units, the alien's turn starts. In addition to eliminating as many enemies as possible, your mission is to minimize civilian casualties as well as to acquire parts of the advanced alien technology.
Once you've acquired sufficient samples of the unknown technology, your research labs will be able to reproduce the alien weapons and devices in order to use them against their original creators.
The game engine is based on a heavily modified version of ID's Quake2 Engine. This doesn't imply that 'UFO: Alien Invasion' is a mod or a total conversion at all! No, 'UFO: AI' is a stand-alone game which doesn't require Quake2 or any similar program to run. Our self-developed game engine is featuring up-to-date OpenGL graphics and special effects, increased texture resolution, hardware accelerated clipping of map layers to toggle between floors, a new animation system for player models, a stunning AI and a few other gimmicks.
You can play UFO: ALIEN INVASION with your friends via LAN or Internet. One player takes the role of the human special squad while the other is in control of the alien invaders. Co-op team play with multiple players on both sides is also supported for up to three teams on each side (6 players total).