UFO Alien Invasion Christmas Edition

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.