Portal

Action Shooter First-Person Sci-Fi Arcade

Portal is a new single player game from Valve. Set in the mysterious Aperture Science Laboratories, Portal has been called one of the most innovative new games on the horizon and offers gamers hours of unique gameplay. The game is designed to change the way players approach, manipulate, and surmise the possibilities in a given environment; similar to how Half-Life 2's Gravity Gun innovated new ways to leverage an object in any given situation. Players must solve physical puzzles and challenges by opening portals to maneuvering objects, and themselves, through space. [Valve]

MoonBase Commander

Strategy Turn-Based Real-Time Sci-Fi General

MoonBase Commander puts players in charge of their own lunar territory in a quest to build the most powerful empire on the moon. The key to winning is to find, exploit and use valuable energy pools to eliminate rival factions who are also on the same quest. Along the way players must choose the best way to accomplish their goals by using weapons, surveillance or shields to fortify their defenses. MoonBase Commander features multiple and unique opposing factions, bright graphics, a light storyline and various types of terrain that can be easily customized with the terrain editor. [Infogrames]

Command & Conquer: Red Alert 2 - Yuri's Revenge

Strategy Real-Time Sci-Fi Command

This Red Alert 2 Expansion Pack finds Yuri ready for world domination in a post-peace treaty, free world. Refining his mind-control technologies, he's created an army of terrors, from mind-controlling tanks to long-range psychics, whose brains are their biggest weapons. Play as Allies or Soviets, and take on Yuri in Hollywood, Egypt -- even the moon -- in 14 new solo campaign missions. [Westwood Studios]

Ground Control: Dark Conspiracy

Strategy Real-Time Sci-Fi General

Dark Conspiracy continues the story of Major Sarah Parker. After defeating the Crayven Corp. and Order Of The New Dawn forces on Krig 7b, Parker must enlist a group of mercenaries to help her escape from the deserted planet and discover the terrifying truth about the alien technology they were fighting over. [Sierra Studios]