Starbound Co-op: Build a Shared Universe Together
Explore planets, follow a story campaign, and build homes together in a four-player online sandbox where every friend has a ship of their own.
91% positive of 120,658 reviewsPlaying now: 824$14.99
Sci-fi · Space games to play together
250 Sci-fi · Space games your group can play together online, including Starbound, Super Hydorah, and Particle Fleet: Emergence.
All games: 24
Super Hydorah
Super Hydorah is a nonlinear horizontal shoot’ em up designed to offer a challenging experience, sublimating the richness of traditional shmup classics. Face the menace of the Meroptians aboard the Delta Lance, alone or with your friends in this game with direct action and nostalgic art.
85% positive of 290 reviewsPlaying now: 2$1.99
Particle Fleet: Emergence
Build and design your own fleets and stand opposed to the Particulate in this physics/strategy/RTS/fleet hybrid. Build partially destructible and self repairing ships that interact with enemies less controlled by some scripted logic and more driven by a real time massive physics particle simulation.
92% positive of 1,202 reviewsPlaying now: 37$14.99
Star Trek Timelines
Explore the Final Frontier in the ultimate sci-fi strategy RPG, Star Trek Timelines! Join Starfleet and overcome challenges as you boldly go where no game has gone before – across the entire history of Star Trek.
64% positive of 1,536 reviewsPlaying now: 172Free
DoDonPachi Resurrection
The legendary bullet-hell shoot-’em-up series has come to Steam! DoDonPachi is ressurected after a Blissful Death with enough modes to satisfy the beginner and the expert player alike. Tonight we dine in bullet hell!
95% positive of 988 reviewsPlaying now: 8$29.99
CRYPTARK
Cryptark is a 2D sci-fi shooter where you take on the role of a heavily armed privateer seeking to earn government contracts by boarding deadly alien space-hulks. It's up to you to strategize a plan of attack, pick an equipment loadout, and destroy the central core to be victorious.
83% positive of 913 reviewsPlaying now: 1$14.99
STAR WARS™ Galactic Battlegrounds Saga
Lead the great armies of the Star Wars™ Episode II: Attack of the Clones saga in intense real-time strategy clashes. Enter the fray as the Galactic Empire, Rebel Alliance, Wookies, Trade Federation, Gungans or Royal Naboo to determine the course of the Galactic Civil War.
92% positive of 3,980 reviewsPlaying now: 149$5.99
LEGO® STAR WARS™: The Force Awakens
The No. 1 LEGO® videogame franchise triumphantly returns with a fun-filled, humorous journey based on the blockbuster film. The game will also feature brand new story content from the Star Wars Universe that explores the time between Star Wars: Return of the Jedi and Star Wars: The Force Awakens.
81% positive of 4,149 reviewsPlaying now: 63$19.99
Star Realms
Star Realms is a hugely popular space combat deckbuilding game. Download and play today (note: base set is required to play online) to find out why Star Realms is the winner of SXSW 2014 Board Game of the Year, 7 Golden Geek Awards from BoardGameGeek, and 2 Dice Tower awards!
85% positive of 2,256 reviewsPlaying now: 68Free
Call of Duty®: Infinite Warfare
Infinite Warfare delivers three unique game modes: Campaign, Multiplayer, and Zombies.
65% positive of 17,629 reviewsPlaying now: 228$59.99
HELLDIVERS™ Dive Harder Edition
HELLDIVERS™ is a hardcore, cooperative, twin stick shooter. As part of the elite unit called the HELLDIVERS, players must work together to protect SUPER EARTH and defeat the enemies of mankind in an intense intergalactic war.
90% positive of 25,735 reviewsPlaying now: 108$19.99
Viscera Cleanup Detail: The Crew After the Carnage
Up to four local janitors or 32 online can tackle a shared disaster site, but split-screen controls and online setup come with practical caveats.
92% positive of 18,106 reviewsPlaying now: 162$12.99
Offworld Trading Company
Mars has been colonized, and Earth's corporate titans fight to dominate this new market. Competition is fierce in this fast-paced economic RTS from Civilization IV Lead Designer, Soren Johnson.
76% positive of 3,604 reviewsPlaying now: 33
Istrolid
In Istrolid you design your own unique spaceships from a large number of parts to fit your strategy and play style. With no set units or factions you are free to create a fleet where each ship has its own balanced strengths and weaknesses, from basic fighters and bombers to hulking battleships and speedy destroyers.
86% positive of 2,695 reviewsPlaying now: 4Free
Lovers in a Dangerous Spacetime
Explore a neon galaxy in your very own battleship in this 1- to 4-player couch co-op adventure.
93% positive of 3,377 reviewsPlaying now: 23$14.99
Planetary Annihilation: TITANS
Wage war across entire solar systems with massive armies at your command. Annihilate enemy forces with world-shattering TITAN-class units, and demolish planets with massive super weapons!
84% positive of 11,426 reviewsPlaying now: 224$29.99
Tasty Planet: Back for Seconds
Control a tiny ball of grey goo with the ability to eat anything smaller than itself. The more it eats, the bigger it gets! Eat rats, dinosaurs, gladiators, samurai, pyramids, volcanoes... Everything! Soon you'll be eating the entire planet.
93% positive of 630 reviewsPlaying now: 2$7.99
Battlefleet Gothic: Armada (Classic)
Battlefleet Gothic: Armada is the RTS videogame adaptation of Games Workshop’s classic tabletop game, pitting the Chaos, Imperium, Eldar, and Orks against each other in visceral space-battles.
67% positive of 5,146 reviewsPlaying now: 40$14.99
DARIUSBURST Chronicle Saviours
DARIUSBURST Chronicle Saviours is the latest installment in Taito's DARIUS series of arcade-style shooting games. Blast hordes of alien sea-monsters, and blaze your own trail through branching environments.
81% positive of 721 reviewsPlaying now: 5$49.99
Galactic Civilizations III
Build a civilization that will stand the test of time in the largest space-based strategy game ever! Choose from dozens of unique races and make a name for yourself across the galaxy through diplomacy, espionage, technological advances, and more.
77% positive of 8,340 reviewsPlaying now: 121
Disney•Pixar WALL-E
Based on the 2008 computer animated film from Pixar Animation Studios, the video game version of WALL-E involves playing as the lonely robot as he navigates a trash-tainted world and begins an unlikely trek across the cosmos.
96% positive of 1,075 reviewsPlaying now: 3$19.99
DG2: Defense Grid 2 Makes Tower Defense a Shared Puzzle
Team up with one friend to defend power cores in DG2: Defense Grid 2. Choose fully cooperative Doubles or the more competitive Coordinated Defense, online or on one computer.
85% positive of 2,711 reviewsPlaying now: 52$9.99
STAR WARS™ - X-Wing Alliance™
A neutral family fights for its business - and its survival - and is swept up in the struggle against the encroaching Empire. You must defy the strong-arm tactics of a rival family who will stop at nothing to destroy your trading company.
81% positive of 415 reviewsPlaying now: 2$9.99
Ikaruga
Shoot! Dodge! and... Get Hit!? "Ikaruga" is a vertical shoot 'em up that features an unique polarity-switching gameplay. Switch the ship's polarity and "get hit and absorb" enemy bullets! Achieve High Score with the chain bonus!
94% positive of 2,215 reviewsPlaying now: 8$9.99