可以和朋友在线一起玩的动作（Sci-fi）游戏共 522 款，包括Chex Quest HD、ACE COMBAT™ 7: SKIES UNKNOWN和Splitgate。
全部游戏: 24
Travel to the remote planet of Bazoik to free galactic citizens from the evil cereal-eating Flemoids! Venture deep into the caverns of Bazoik, using an array of "zorching" devices to send these nefarious foes back to their home dimension!
Become an ace pilot and soar through photorealistic skies with full 360 degree movement; down enemy aircraft and experience the thrill of engaging in realistic sorties! Aerial combat has never looked or felt better!
Splitgate is a free-to-play, fast-paced multiplayer shooter that features player-controlled portals. This sci-fi shooter takes the FPS genre to a new dimension with its portal mechanics, delivering high-flying, multi-dimensional combat.
Foul Tyranids rampaging on barren worlds; the mysterious Aeldari waging war on the Imperium; a prophecy that could change the fate of an entire Sector. Purge the unclean with the new Tech-Adept Inquisitor and carry out the Emperor’s will in the grim Action-RPG “WH40k: Inquisitor - Prophecy”.
Go on a trip through time! Experience the freedom of traveling into any date, hour and minute in time between the years 1 and 3033 AD! Help your best friend Edward in his scientific affairs! Watch out for the Time Agents & avoid yourself!
From one of gaming’s most acclaimed sagas, Gears is bigger than ever. With all-out war descending, Kait Diaz breaks away to uncover her connection to the enemy and discovers the true danger to Sera – herself.
An online co-op horror game where you pacify, weaken and capture supernatural creatures for PAH Inc. Each level has a different story, unique monsters, and multiple endings. Play single player or together with up to 6 friends. Includes proximity voice chat with fun effects.
Generation Zero is a stealth-action shooter where you wage guerilla warfare against lethal mechanical enemies. Explore a vast open world map inspired by the Swedish Cold War era, take part in the resistance alone or with up to three friends in seamless co-op.
SiN: Gold (1998) has returned! Free update for original owners!
BallisticNG is a high speed, all thrills anti-gravity combat racer and open modding environment developed as a tribute to old school classics such as Wipeout, Rollcage and Jet Moto.
Distance is an atmospheric racing platformer. Fusing futuristic arcade racing with parkour, survive a deadly, mysterious, neon-drenched city by jumping, rotating, and flying.
Goat Duty is a multiplayer shooter where you get the chance to shatter other armed goats to pieces in madness and crazy matches. Throw other goats to the deep end, watch them fly, and test your skills while wearing the craziest skins in our four multiplayer modes. Are you ready? Set? GOOOOATS!
Harness gravity-defying speed in classic combat racing taken to the EXTREME. Master wall-riding, ceiling-surfing tracks, and unleash devastating weapons across 29 blistering circuits. Race solo, split-screen, or online with up to 10 players. GRIP delivers white-knuckle racing like nothing else.
With the shifting gravity on your side, aim your cannons, blast your enemies and enjoy the fireworks. Worbital is a real-time strategic artillery game in space, peppered with a heavy dose of cosmic chaos. The goal: be the last civilization standing!
Take command of your own mercenary outfit of 'Mechs and the MechWarriors that pilot them, struggling to stay afloat as you find yourself drawn into a brutal interstellar civil war.
Deep within a secure underground facility, a sudden containment breach allows many of the secured anomalies to escape from their chambers. Assist the Foundation in re-securing the facility, help the Insurgency in their goal to capture it, or wreak havoc as an SCP in a frantic bid to escape.
Travel back in time to change fate itself, in this beautifully crafted story-driven adventure, inspired by classic 90s action-platformers. Join timekeeper Lunais on her quest for revenge against the empire that killed her family, using time-bending powers to explore a vast, connected world.
A new six-degree-of-freedom shooter with intuitive controls, amazing lighting and graphics. From the creators of Descent, Overload is the best zero-gravity robot-blasting combat ever.
Enter the Chaos-infested Caligari Sector and purge the unclean with the most powerful agents of the Imperium of Man! W40k: Inquisitor – Martyr is a grim Action-RPG featuring multiple classes of the Inquisition who will carry out the Emperor’s will.
AirMech® Strike is a fast paced Action-RTS game that can be played solo, coop, or competitively online. Earn Kudos and Experience in battle and unlock a wide collection of AirMechs and Units while you practice the perfect strategy to emerge victorious!
Stationeers puts you in control of the construction and management of a space station to run by yourself or online with your friends. Complex atmospheric, electrical, manufacturing, agriculture, and gravitational systems require your thought and management at all times!
Star Control is a space role-playing game in which you command Earth's first interstellar starship on a mission to save the Earth from hostile alien empires.
Battlezone: Combat Commander remasters FPS-RTS classic Battlezone II with slick new visuals, brand new achievements, Steam Workshop support and much more! The solar system is at war. Take command.