Best Sci-fi Games on Steam
Unlike generic lists, our strategy game recommendations use a rigorous analysis of Steam user reviews to identify and feature only the best, community-validated sci-fi games. For those who prefer not to search, check out lists of the most played, top deals and best free to play Sci-fi games on Steam.
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Half-Life: Blue Shift
Made by Gearbox Software and originally released in 2001 as an add-on to Half-Life, Blue Shift is a return to the Black Mesa Research Facility in which you play as Barney Calhoun, the security guard sidekick who helped Gordon out of so many sticky situations.
Half-Life: Opposing Force
Return to the Black Mesa Research Facility as one of the military specialists assigned to eliminate Gordon Freeman. Experience an entirely new episode of single player action. Meet fierce alien opponents, and experiment with new weaponry. Named 'Game of the Year' by the Academy of Interactive Arts and Sciences.
Half-Life
Named Game of the Year by over 50 publications, Valve's debut title blends action and adventure with award-winning technology to create a frighteningly realistic world where players must think to survive. Also includes an exciting multiplayer mode that allows you to play against friends and enemies around the world.
Saira
Saira is a puzzle platformer with non-linear gameplay and a whole universe for you to explore. The game is heavily influenced by classic puzzle adventure games and uses a new unique graphical style combining high resolution photography into a lush and mysterious world.
Warhammer 40,000: Dawn of War II: Retribution
Command any of the six unique factions in the next standalone expansion of the critically acclaimed Dawn of War real-time strategy franchise. Choose to build a massive army or lead a small squad of elite heroes into battle and experience a single player campaign customized to your favorite race.
Jurassic Park: The Game
Experience a brand new adventure set during the events of the first Jurassic Park movie and see new areas and dinosaurs in this landmark adventure 65 million years in the making!