Natural Selection 2
A fast paced multiplayer shooter that pits aliens against humans in a strategic and action-packed struggle for survival!
85% positive of 8,647 reviewsPlaying now: 142$4.99
Space Indie games to play together
195 Space Indie games your group can play together online, including Natural Selection 2, Sins of a Solar Empire®: Rebellion, and Awesomenauts.
All games: 24
Sins of a Solar Empire: Rebellion Makes the Galaxy Your Battlefield
Multiplayer is designed for up to ten players, with online and LAN co-op or PvP modes; build empires together against AI rivals and choose from six factions and several match endings.
92% positive of 10,257 reviewsPlaying now: 314$19.99
Awesomenauts Turns a MOBA Into a 2D Team Brawl
Join up to two friends for a 3v3 platforming MOBA, push through droid lanes, and break the rival team’s base in Awesomenauts.
84% positive of 11,825 reviewsPlaying now: 69$19.99
Planets Under Attack
Play as humans or robots in a brand new sci-fi strategy adventure! Travel into the far reaches of space, through cleverly designed star constellations and variable game modes, conquering enemy planets using 15 combinable technologies.
63% positive of 319 reviewsPlaying now: 3$2.39
Beat Hazard Turns Your Music Into a Two-Player Space Shooter
Beat Hazard turns music from your library into a colorful twin-stick shooter, with two-player local co-op in the base game and online co-op in its optional Ultra DLC.
94% positive of 5,074 reviewsPlaying now: 2$9.99
Shatter
Shatter is a retro-inspired brick-breaking game that merges familiar action with unique twists and a modern crafted production approach.
95% positive of 663 reviewsPlaying now: 1$1.99
AI War: Fleet Command Turns Co-op Into a Galactic Campaign
Join up to seven friends in a long strategy campaign against two AI empires. Expansion helps your resistance, but destroying key enemy infrastructure can draw more attention.
84% positive of 992 reviewsPlaying now: 3$9.99
Dome Keeper
Defend against waves of alien monsters in this unique roguelike action miner. Dig for resources, collect useful gadgets, and upgrade equipment to increase odds of survival – just hurry back before your dome is destroyed!
91% positive of 19,282 reviewsPlaying now: 0$17.99
Polarity
Polarity takes it to the next level, demanding all of your wits and reflexes. Full-featured local co-op campaign.
77% positive of 3,676 reviewsPlaying now: 0$12.99
Mushy
Mushy is a round based first person shooter. The attackers plant a bomb and the defenders defuse it; all while engaging in armed combat!
85% positive of 1,671 reviewsPlaying now: 0Free
Star Saviors
Saviors brings the best bullet hell experience you can find on Steam. Play through 18 challenging stages in this ultimate test of tactics and reflexes.
80% positive of 1,535 reviewsPlaying now: 0$1.99
Stars End
Stars End is a sci-fi survival sandbox set on the wild frontier of a distant star system. Play solo or host your own server as you craft, build, and battle to survive in a galaxy shaped by danger, discovery, and your own grit.
62% positive of 1,132 reviewsPlaying now: 0$19.99
Chippy
Chip destructible bosses apart pixel-by-pixel in this twin-stick bullet-hell shooter.
89% positive of 1,096 reviewsPlaying now: 0$7.49
Sketchy's Contract
A 1-8 player co-op sci-fi looter horror game that takes place on a mysterious asteroid belt where players must complete contracts by traveling to exotic planets to kill creatures, find loot, and/or farm planetary materials that they must return to an ominous figure named Sketchy.
82% positive of 1,027 reviewsPlaying now: 0$8.99
Homebrew - Patent Unknown
Unleash your creativity and craft anything from flying cars to jet-powered toilets.Fair warning: there's a learning curve. But once you've got it, the sky's the limit for your creations!While active development is paused, we focus preserving the game and keeping it accessible.
71% positive of 829 reviewsPlaying now: 0$14.99
Super Bit Blaster XL
A SUPER throwback to the classic quarter eating arcade games of the 80's. Super Bit Blaster XL is an (even more) enhanced version of the retro styled, addictive, and fast paced arcade shoot 'em up!
93% positive of 779 reviewsPlaying now: 0$2.99
Gods and Idols
Take the role of a newly ascended deity in Gods and Idols. Carve your place among the stars in an open, dynamic, and massive MMORTS universe. Command the powers of the cosmos, form alliances, and use your worshipers as instruments to further your goals.
67% positive of 761 reviewsPlaying now: 0Free
Obama Boss Fight
In the world where all answers were told the great enemies confronted each other. The time has come. Time to defeat Obama once and for all. Will the world be free from racism or you will start a new era? It is up to you. But keep in mind... Obama has no chill.
95% positive of 645 reviewsPlaying now: 0$2.99
Infinity: Battlescape
Infinity: Battlescape is a multiplayer space combat sim supporting hundreds of players on a single server. Join one of the corporate factions and fight for domination of a seamless, true-to-scale procedural star system. Participate in massive space and planetary battles involving hundreds of ships.
79% positive of 639 reviewsPlaying now: 0$34.99
waxweaver
A short sandbox rpg game that takes place on a square planet. Explore the world, gather resources, build a home and become stronger.
96% positive of 625 reviewsPlaying now: 0Free
The Anacrusis
Battle for survival against endless alien hordes with your friends! The Anacrusis is a first-person shooter that dynamically adjusts difficulty to you. Experience intense 1-4 player co-op action or play as the aliens and stop your friends in 1-8 player Versus mode. Full Steam Workshop support!
67% positive of 618 reviewsPlaying now: 0$9.99
Capsized
Capsized is a fast paced 2D platformer focused on intense action and exploration. As a intrepid space traveler, your ship has crash landed on a mysterious alien planet. You must navigate through the perilous environment and fight off blood-thirsty creatures to save your crewmates and escape with your lives!
81% positive of 595 reviewsPlaying now: 0$9.99
Beat Hazard 3
Are you ready to explore your music collection mapped as a stunning galaxy of wonders? Experience your music collection as never before with this intense music driven twin stick shooter. Each of your songs will have its own unique ebb and flow based on the music.
84% positive of 588 reviewsPlaying now: 0$19.99
Ring Runner: Flight of the Sages
Ring Runner combines the fast-paced action of space combat with the rich story and skill variety of an RPG.Trek across the universe in a 30 hour long story-driven campaign based on a companion Sci Fi novel, or challenge 6 scenarios alone, cooperatively, or competitively through local or online multiplayer.
83% positive of 580 reviewsPlaying now: 0$4.99