703 Sci-fi games your group can play together online, including Xeno Crisis, Colony Siege, and fox soldier.
All games: 24
Xeno Crisis is an arena shooter in which up to two players take control of battle-hardened marines embarking on a deadly mission to confront an alien menace! Run and gun your way through thousands of adversaries, searching for survivors, and ultimately facing the origin of the outpost's demise.
Colony Siege combines the best of RTS and tower defense, including base building, mazing, and unit physics. Defend Earth's remaining colonies using an arsenal of deadly weapons to torch, slice, throw, and impale swarms of alien invaders.
"FOXSOLDIER"is an action RPG hardcore sci-fi adventure game with multiplayer competition as the core.Only use the left and right buttons of the mouse to operate the 4 action systems of shooting, long sword, kung fu and locomotive.
Explore a strange procedural world with friends in online or LAN co-op, building spell loadouts and a settlement as you take on its Overlords.
Drink More Glurp is a wacky physics, sports(ish), hot seat, party game set on a distant world where aliens have copied Earth’s summer games and got everything slightly wrong. Compete in crazy contests with up to 20 local players or challenge the world on the global leaderboards.
Traverse 'The Arc' in this beautiful, Cyberpunk-styled action rogue-lite as you attempt to reset an evil rogue AI. Experiment with different weapons and augments as you fight hordes of machines programmed for your annihilation! Collect Nanites & power-up after every run either solo or with friends!
Zedfest is the goriest game show ever created! A hardcore 6 player co-op third-person shooter with the goal to complete objectives while neutralizing Zeds with lots and lots of visceral gore.
Stranded on a hostile and deadly planet, you must gather resources, build shelter, and fight to survive each night. But the secrets of this world await in a gripping sci-fi survival PvP game.
HIVE JUMP is a sci-fi action platformer for 1-4 players blending run ‘n gun gameplay with roguelike elements.
A 4-player online co-op third-person PvE shooter where intense combat meets high-pressure cooking. Battle hordes, coordinate your loadout, and cook under fire to build your pizza empire.
A steampunk roguelike with a unique fighting mechanic. Master the piloting of giant mechanical worms, lay waste to all that stand in your way and reclaim your rightful place on the throne.
Jar Wars is a slap-stick multiplayer VR game. Battling with friends and foes using impractical weapons like giant rockets, a hologram sword, and boxing gloves. Will you be the last brain standing?
Stardust Galaxy Warriors: Stellar Climax is a fast-paced couch co-op action shooter with SHMUP/Brawler gameplay and RPG elements. Choose your mechs, weapons & upgrades then soar through space, defeat evil & save the future... from itself!
Gamble with your life in this explosive PvP game for 2-4 players. Cut wires, earn cash, use abilities and avoid the detonators. Test your luck, skills and remember to always bet on the boom!
Tower Tag is the original hyper-dynamic futuristic paintball like PVP shooter with a grappling hook locomotion method that becomes second nature instantly. Without any motion sickness!...
The Professional Bowlers Association and FarSight Studios have partnered to create an officially licensed PBA video game. The game features a career mode with over 100 tournaments set in dozens of venues, quickplay and local multi-player modes, online tournaments and more.
Stranded on an alien planet, you must defend your Powercore! Use your weapons to fight hordes of alien enemies and strategically use traps in this new FPS tower-defense survival game!
Punch Planet is a Competitive Sci-Fi 2D fighter with a rich and immersive universe, spanning exotic planets, advanced cities, and alien races.
TimeShifters is an old school first person shooter inspired by games like TimeSplitters and GoldenEye.
Antigraviator is a sleek new take on the anti-gravity racing genre. Use traps, power-ups and boosts to overtake your opponents and dominate the track in single player or multiplayer mode. With no speed limit holding you back, Antigraviator delivers the fastest racing experience of the future.
Enter the war-torn world of Veá, where sci-fi and fantasy collide in Liquidation, an immersive RTS. Lead your armies and harness powerful abilities in a high-stakes battle for Quenrium, the mysterious substance that holds Veá’s fate.
Engage in multiplayer gunfights that you are free to fly in the sky play like no FPS you've played before. you can choose 4 guns with a totally level playing field and 18 beautiful maps with different strategies. Equip your jetpack and Fight in the sky!
Explore a vast universe with pulse-pounding action, side-splitting humor, and hair-raising plot twists in these 2 classic space adventure games.
You will see the creation of new lives... Capture enemies and fire them back at their allies as enormous beams of energy in this horizontally scrolling shooting game, featuring 5 versions of G-Darius with new features, enhancements, and Steam exclusive extras!