オンラインでみんなと遊べるアクション（Space）ゲーム225本。Battlezone: Combat Commander、Boundless、Space Hulk: Deathwing Enhanced Editionなど。
すべてのゲーム: 24
Battlezone: Combat Commander remasters FPS-RTS classic Battlezone II with slick new visuals, brand new achievements, Steam Workshop support and much more! The solar system is at war. Take command.
Shape your citizen, forge your destiny and sculpt your world in this epic voxel sandbox MMO built on endless possibility.
Space Hulk: Deathwing - Enhanced Edition is a First-Person Shooter based on Games Workshop’s cult classic board game set in Warhammer 40,000 universe. Expanding upon the original game, and featuring a host of new content, new features and a richer multiplayer mode.
Heat Signature is a game from the developers of Gunpoint where you break into spaceships, make terrible mistakes, and think of clever ways out of them. You take a mission, fly to the target ship, sneak inside, and make clever use of your gadgets to distract, ambush and take out the crew.
Fun, fast paced online multiplayer arcade space shooter. Take control of your spaceship, mine asteroids, increase your stats, upgrade to different types of spaceships with improved stats and weapons. Fight against other players and collect their gems.
Allegiance is a team-based multiplayer space combat sim that seamlessly combines first-person space combat with a top-down-view perspective, real time strategy, and real time tactics. Team commanders build bases, research technology, and coordinate players to execute a wide range of strategies.
No Man's Sky is a game about exploration and survival in an infinite procedurally generated universe.
惑星を探索し、ストーリーを進め、仲間と家を建てよう。4人で遊べるオンラインサンドボックスで、宇宙船はプレイヤーごとに用意されます。
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.
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!
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.
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.
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.
Infinite Warfare delivers three unique game modes: Campaign, Multiplayer, and Zombies.
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.
Explore a neon galaxy in your very own battleship in this 1- to 4-player couch co-op adventure.
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!
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.
Relic Hunters Zero: Remix is a remaster of the FREE 1 million player hit game about blasting evil space ducks and turtles with tiny cute guns. It’s fast, it’s tactical, and feels deliciously smooth to play. Unlock new weapons, characters and relics to defeat the Ducan Commander!
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.
THE legendary free online multiplayer space shooter! Addictive, fast-paced, easy to learn, and impossible to master.
The Caped Crusader joins forces with the super heroes of the DC Comics universe and blasts off to outer space to stop the evil Brainiac from destroying Earth.
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.
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!