Aliens Invade Tinywarz! - TinyWarz is a massively multiplayer, turn-based, strategy-game where players battle each other and computer controlled bandits on distant worlds. Time is an important factor in TinyWarz - players are given a limited amount of time to finish their turns and are rewarded for early completion. (1686 hits)
Tremulous - free, open source game that blends a team based FPS with elements of an RTS. Players can choose from 2 unique races, aliens and humans. (896 hits)
Stalins vs. Martians - real-time strategy game based on an appearance by aliens in Siberia during World War II. (599 hits)