Simulation · Sci-fi · Singleplayer games to play together
72 Simulation · Sci-fi · Singleplayer games your group can play together online, including STAR WARS: Galactic Racer™, Angels Fall First, and Roadside Research.
STAR WARS: Galactic Racer™ is a runs-based, high-stakes reinvention of racing born in the lawless Outer Rim. With the Empire gone and the galaxy rebuilding, The Galactic League is created: an underground, unsanctioned circuit where syndicates bankroll chaos and champions are forged.
86%86% positive of 6,887 reviews6.8KPlaying now: 6,848$59.99
From commanding the battle standing on the bridge of your flagship all the way down to tactical infantry firefights - AFF brings together all the combat you ever loved in a rich science fiction setting. Boarding, pilotable capital ships, deep weapon customization and full Bot support included!
80%80% positive of 3,893 reviews20Playing now: 20$17.99
Roadside Research is a 1 to 4 player co-op gas station simulator. Except you’re aliens. And undercover. Do very human things like restocking shelves while preparing for the invasion. Just don’t get caught.
85%85% positive of 4,096 reviews87Playing now: 87$14.99
StarRupture is a first-person open world base-building game with advanced combat and tons of exploration. Play alone or in a group on this sublime and ever-changing planet, extract and manage resources, create your complex industrial system and fight off hordes of alien monsters.
80%80% positive of 12,566 reviews1.1KPlaying now: 1,145$19.99
Desynced is a sci-fi strategy game with fully customizable units and behaviors. Gather, build, research, and explore the unknown. Alone or with friends, unveil the mystery of an AI on the edge of self-awareness and uncover the hidden truth in this blend of strategy, automation, and exploration.
79%79% positive of 1,911 reviews63Playing now: 63$20.99
KILL IT WITH FIRE! 2 is the ultimate co-op spider-hunting experience! Either solo or as a team of Exterminators, unleash an arsenal of crazy weapons, wreak havoc, and complete dozens of challenges across seven dimensions under spider siege.
92%92% positive of 1,455 reviews16Playing now: 16$14.99
Granvir is a 3rd person action roguelite mech-builder with co-op multiplayer. Scavenge the battlefield for parts to replace and upgrade your Granvir and weaponry. PIlot your Granvir and manage your campaign between battles to find the best equipment and stay supplied while fighting a guerilla war.
91%91% positive of 938 reviews92Playing now: 92$14.99
The Universe is yours. SpaceCraft is an online space exploration and building game. Explore a vast galaxy of solar systems and planets, mine and craft resources, design and build ships, automate planetary bases and interplanetary logistics, trade and cooperate.
62%62% positive of 2,713 reviews317Playing now: 317$29.99
Start with your Command Center and expand it into a colossal modular flagship, module by module. Design custom warships from the ground up, grow a thriving civilization, and command powerful fleets across the Solar System in tactical real-time battles.
87%87% positive of 1,611 reviews45Playing now: 45$29.99
An open world survival craft game for 1 to 4 players, set on a frozen exomoon where your base is a train carrying the last of humanity, and standing still is slowly killing it. Fight, scavenge, and craft your way to a train 1,000 wagons long. But every death costs you a passenger.
67%67% positive of 390 reviews9Playing now: 9$14.99
An incremental unfolding game about feeding fuel into a reactor. Combine elements to produce energy, unlock exotic technologies and explore a strange galaxy.
81%81% positive of 672 reviews7Playing now: 7$6.99
Survive and colonize Mars alone or in online co-op. Build and upgrade your base, craft equipment, mine resources, produce water, oxygen and food, explore an open world, and repair complex machinery in a technical survival sandbox.
67%67% positive of 2,736 reviews87Playing now: 87$29.99
In this first-person survival game, your high-tech airship is your home, lab, and lifeline. Build it your way and fly above a ruined Earth. Play solo or with up to 3 friends, crafting, salvaging what was left behind, and searching for a cure. Choose your journey, from calm to hardened survival.
76%76% positive of 8,207 reviews201Playing now: 201$11.99
The Gold River Project™ is a camping trip gone wrong in the Pacific Northwest. Explore, craft, build, and survive in this open-world experiment that traps you and up to 4 friends in this single player or co-op survival adventure game.
61%61% positive of 647 reviews45Playing now: 45$12.49
Battle for galactic dominance in this real-time 4X strategy game with unrivaled scale! You’ll explore, expand, exploit, and exterminate through military force, diplomacy, trade, culture, influence, and other underhanded tactics.
82%82% positive of 7,239 reviews768Playing now: 768$49.99
Choose a planet, build your fortress, and prepare for war. Arm yourself with powerful weapons, deploy troops, construct turrets, and defend your stronghold against relentless attacks. Team up with a friend or fight alone in this action packed block builder, where only the strongest survive.
82%82% positive of 269 reviews5Playing now: 5$19.99
In MECHWARRIOR 5: CLANS, players become new Smoke Jaguar pilots in the Clan Invasion of the Inner Sphere. Lead a five-mech "Star" squad across diverse planets, engaging in an expansive campaign with immersive gameplay and intricate combat. Customize BattleMechs and explore strategic options.
73%73% positive of 5,646 reviews241Playing now: 241$29.99
Build a sophisticated robot factory optimized to perfection in an infinite voxel world. Mine and harvest resources, automate your production lines and manage complex systems while researching your way to become the galaxy’s leading robotics megacorp.
82%82% positive of 3,325 reviews218Playing now: 218$29.99
eXplore, eXpand, eXploit, eXterminate, EXPRESS. All of the depth, diplomacy, conflict and conquest of a turn-based 4X epic but played in fast-paced 60-minute competitive sessions. Play Solo or Multiplayer for 2-8 players.
90%90% positive of 890 reviews8Playing now: 8$14.99
Techtonica is a first-person factory automation game with a gripping mystery about mining your way out from the depths of an alien planet. Explore bioluminescent caves, mold destructible terrain, construct a massive subterranean factory. Dig your way toward answers & discover the secrets of Calyx.
64%64% positive of 3,090 reviews56Playing now: 56$29.99
Barotrauma is a 2D co-op submarine simulator – in space, with survival horror and RPG elements. Steer your submarine, complete missions, fight monsters, fix leaks, operate machinery, man the guns and craft items, and stay alert: danger in Barotrauma doesn’t announce itself!
94%94% positive of 62,517 reviews4.9KPlaying now: 4,887$17.49
Final Factory blends factory building, spaceship design, and a rich universe to explore. Build a mega factory and command a massive fleet against the hostile local aliens. Discover new technologies and unlock the secrets of an ancient civilization as you explore an infinite cosmos.
78%78% positive of 288 reviews5Playing now: 5$18.99
Take command of a civilization that has just achieved faster-than-light travel in Galactic Civilizations IV, the newest entry in the award-winning space 4X strategy game series. Explore the galaxy, colonize worlds, shape cultures, make alliances, fight wars and pioneer new technologies.
72%72% positive of 2,240 reviews302Playing now: 302$39.99