Best sci-fi software for free download

Massive Assault Network 2: a 3D strategy game based on an original Secret Allies concept. Rivals struggle for domination in a sci-fi environment. Are you smart enough? Lead your divisions, fleets and air squadrons to crush the enemies with no mercy!
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Roll a ball through many levels in this Arcade Game set in a fantastic 3D Sci-Fi atmosphere, game is based in the old hit of the 80's called Marble Madness. Lots of fun for everyone. Amazing Trance soundtrack. Online highscores. Kid Safe.
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I of the Enemy: Ril'Cerat is a totally free, stand alone, science fiction real-time starategy game, that is the first chapter in the "I of the Enemy" saga.
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