It is the year 2084. You control a secret organisation charged with defending Earth from a brutal alien enemy. Build up your bases, prepare your team, and dive head-first into the fast and flowing turn-based combat. UFO: Alien Invasion is a strategy game featuring tactical combat against hostile alien forces which are about to infiltrate earth. You’re in command of a small special unit which has been founded to face the alien strike force. To be successful, you need a research team to study the aliens and their technologies in order to understand their goals and the aliens themselves. UFO: Alien Invasion is a free game, licensed under GNU GPL, heavily inspired by the X-COM series by Mythos and Microprose. The first game of the series, was UFO DEFENSE (AKAENEMY UNKNOWN). UFO, this new game is neither a sequel nor a remake of UFO DEFENSE – just a similar strategy game. Supports Windows XP or higher.