Sci-fi · Singleplayer games to play together

427 Sci-fi · Singleplayer games your group can play together online, including ACE Strategy: Mecha Nova, Astroloot, and Void Crew.

All games: 24

ACE Strategy: Mecha Nova

A tactical roguelike deck building game. Recruit elite mecha pilots, deploy drones and cast commands. Master your ACE mechas while collecting unique cards and chips in battles, and form your own build for total battlefield dominance.

77% positive of 117 reviewsPlaying now: 1$14.99

Astroloot

Loot, level up, and obliterate everything in your path. Astroloot is a sci-fi bullet heaven with deep ARPG systems, featuring a massive skill tree, deterministic crafting, and near-endless build possibilities.

91% positive of 597 reviewsPlaying now: 10$6.99

Void Crew

Void Crew is a Chaotic, Co-op Roguelite game for 1 to 6 players: Outfit your spaceship and crew for thrilling quests, brave fierce enemies in Space Battles... and try not to panic!

85% positive of 6,598 reviewsPlaying now: 144$24.99

Mechabellum: Plan a Two-Person Mech Expedition

Lead separate armies on one battlefield in two-player online co-op, counter shifting mech builds across nine planets, and take each fight at your own pace.

82% positive of 18,327 reviewsPlaying now: 1,853$0

Cubic Odyssey

Embark on a galactic journey in Cubic Odyssey, an open-world adventure where you explore vibrant planets, craft tools, build vehicles, and fight the Red Darkness. Uncover ancient mysteries, and shape a universe full of life, danger, and limitless possibilities!

74% positive of 2,416 reviewsPlaying now: 54$9.99

Shape Shifter: Formations

Shape Shifter: Formations is an action twin-stick shooter with rogue-lite elements, where you must destroy hordes of geometric enemies alone or with a friend. Select your ship and combine a large variety of weapons, abilities and infinitely stacking upgrades to craft your own unique build.

89% positive of 276 reviewsPlaying now: 4$7.49

The Gold River Project

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% positive of 647 reviewsPlaying now: 45$12.49

The Planet Crafter

A space survival open world terraforming crafting game, designed for 1 to 10 players. Alter the ecosystem of an inhospitable planet to render it habitable for humanity. Survive, gather resources, and build your base. Then, generate oxygen, warmth, and pressure to create a brand new biosphere.

95% positive of 69,767 reviewsPlaying now: 5,172$23.99

Into Black

Explore, mine, craft, & fight for survival in the dark depths of this solo or co-op VR action adventure.

85% positive of 127 reviewsPlaying now: 2$14.99

Toaster Arena

Toaster Arena is a first person multiplayer arena shooter where players battle it out on different maps and game modes. Use Advanced movement to traverse obstacles and gain the advantage on the battlefield.

90% positive of 804 reviewsPlaying now: 8Free

Starship Troopers: Extermination

Starship Troopers: Extermination is an up to 16-player co-op FPS that puts you on the far-off frontlines of an all-out battle against the Bugs! Squad up, grab your rifle, and do your part as an elite Deep Space Vanguard Trooper to take back planets from the Arachnid threat!

79% positive of 29,763 reviewsPlaying now: 323$29.99

Sins of a Solar Empire II

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% positive of 7,239 reviewsPlaying now: 768$49.99

Block Fortress 2

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% positive of 269 reviewsPlaying now: 5$19.99

Axon TD: Uprising - Tower Defense

Axon TD lets you expand the map boundaries themselves. A huge arsenal of towers and a wide variety of enemies clash in a battlefield that grows to your whims. Engage in single, cooperative, and roguelite gameplay.

86% positive of 709 reviewsPlaying now: 30$19.99

MechWarrior 5: Clans

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% positive of 5,646 reviewsPlaying now: 241$29.99

Tuggowar

Tuggowar is the big-brain deckbuilding duel. Engage in tense combat on a solarpunk frontier. Assemble your deck turn by turn, discover powerful card combos, disrupt the enemy strategy, and pilot your well-oiled war machine to victory!

90% positive of 105 reviewsPlaying now: 2$7.99

Star Vortex

Star Vortex is a fast-paced Action-RPG inspired by classics of the genre. Design your ship, fight through hostile alien sectors solo or with friends, salvage rare weapons and experiment with powerful builds until nothing can stand against you.

84% positive of 159 reviewsPlaying now: 1$24.99

Mutants: Genesis

Mutants: Genesis is an online card game that you can play solo or with up to 3 players in PvE and PvP modes! Join the next generation of Psycogs and climb the ranks to establish yourself as Champion! Collect hundreds of mutants, fashion your own deck, cooperate with or fight other players!

76% positive of 460 reviewsPlaying now: 3Free

Avatar: Frontiers of Pandora™

Avatar: Frontiers of Pandora™ is a third and first-person action-adventure game set in the Western Frontier. Reconnect with your lost heritage and discover what it means to be Na'vi.

77% positive of 15,296 reviewsPlaying now: 1,275$29.99

Cluckmech Oasis

Cluckmech Oasis, a top-down shooting Roguelike tower defense game. Play as the Warcluck and lead your team of animal heroes in a fight for survival. Collect, build and upgrade defenses, and engage in intense battle against waves of plant enemies.

86% positive of 3,097 reviewsPlaying now: 143$9.99

Voids Vigil

Blast through robotic hordes in this arena auto-battler rogue-lite Brotato-like. Use auto-firing weapons and drones, timely dashes and special abilities to reach the Void where a final Conservator awaits convergence. Spend your Cogs wisely within the varied shops to create unique builds!

92% positive of 380 reviewsPlaying now: 1$4.99

FOUNDRY

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% positive of 3,325 reviewsPlaying now: 218$29.99

Iron Meat

Iron Meat is a run-and-gun arcade shooter that immerses players in an apocalyptic future overrun by "The Meat," an iron-ravenous mass mutating everything in its path. Blast your way through retro-inspired stages and bosses to uncover the shocking horrors behind secret experiments on the Moon.

95% positive of 996 reviewsPlaying now: 2$15.99