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Swarm Queen
A quick-to-learn but challenging real-time strategy game where you spawn an army of space-bugs that control themselves.
Starblast
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.
ARMORED KITTEN
Awesome side scroll action about Cute and Deadly Kitten with a double shotgun!
Gangs of Space
Gangs of Space is a massively-multiplayer Rogue Shmup where Gangs of players compete for the conquest of the galaxy.
Interplanetary: Enhanced Edition
In this turn-based strategic artillery game, players wage interplanetary wars by developing their home planets and firing massive barrages through the unpredictable gravity fields of the solar system.
Race for the Galaxy
Explore, Settle, Develop, Trade, Consume, or Produce? Which do you need most? Which of Earth's former colonies will be most successful at settling the galaxy, now that JumpDrive exists? Who will discover the secrets of the mysteriously vanished Alien Overlords? Your goal: to build the most prosperous and powerful space empire!
Cosmic Trip
Cosmic Trip is an award-winning real-time strategy VR game. Build a base, command a flying drone army, and attack/defend hostile enemies on strange alien planets.
Interkosmos
Enter the ultimate 1970s space capsule in this thrilling VR adventure. Awaken your inner cosmonaut with intense, interactive gameplay, manage catastrophic system failures, and experience a hilarious story of Cold War absurdities. Can you make it back to Earth alive?
Cosmic Express
Plan the train route for the universe's most awkward space colony!
STAR WARS SHADOWS OF THE EMPIRE
As Luke Skywalker and the Rebel Alliance struggle to defeat Darth Vader and the Empire, a new threat arises. Dark Prince Xizor aspires to take Darth Vader's place at the Emperor's side. As Dash Rendar, it's up to you to protect Luke and help the Alliance. May the Force be with you!
Imperium Galactica II
Reintroducing a classic from the golden era of gaming, the original empire building space RTS, Imperium Galactica 2 is back and looking better than ever with new high-res textures and vivid colors.
Stars in Shadow
Stars in Shadow is a turn-based 4X strategy game and a vivid tribute to the genre classics. Compete with alien factions to explore and colonize nearby starsystems, build fleets to defend against rivals, negotiate or conquer them. Win by unifying the galaxy, through diplomacy or force.
Galaxy Admirals
Galaxy Admirals is a multiplayer turn-based cosmic strategy with pretty innovative and challenging gameplay. Improve your command skills with AI and conquer the whole universe by fighting with real players.
Duke of Alpha Centauri
Duke of Alpha Centuri is a space shooter with amazing graphics. The main goal of our game is to have a lot of fun while blowing up hordes of different types of enemies. Engage in boss fights, upgrade your ship and ship systems until you are able to show off in an endless mode.
Her Majesty's SPIFFING
Her Majesty's SPIFFING is a quaint graphic adventure game following the exploits of Captain Frank Lee English and his trusted regional accented colleague, Aled, as they travel through the cosmos in search of planets to claim for a new Galactic British Empire!
Disoriented
A first-person puzzle game. Simply walk to the door.
The Survey
In the end, everybody gets what they deserve. The sins of the past always manifest within the minds of the sinners. An eternity of suffering awaits, welcome to The Survey.
Children of a Dead Earth
The most scientifically accurate space warfare simulator ever made. Now with Steam Workshop!
Diaries of a Spaceport Janitor
Diaries of a Spaceport Janitor is an anti-adventure game about picking up trash in an alien bazaar. Play as the Janitor, an Alaensee girlbeast with a municipally-subsidized trash incineration job and dreams of leaving the planet of Xabran's Rock far behind her.
Headlander
Launch into the ultimate head trip as you blast through psychotic robots in a retro 70's sci-fi action adventure from Double Fine Productions. It is a world of automation, a utopia gone wrong in which all of humanity have transferred their minds into robotic imposter bodies and are ruled by a computer.
Polandball: Can into Space!
Crazy fun rocket simulator game with countryballs theme. Can Polandball into Space? Try to find out!
Captain Forever Remix
Can you create the raddest spaceship? Captain Forever Remix is the spaceship builder roguelike. Voyage across the Solar System and blast apart randomly-generated enemies for spare parts. This is an officially-licensed re-imagining of the indie classic Captain Forever.
Aurora Nights
Aurora Nights is an entertaining educational game for learning to identify the constellations.
ARCADE GAME SERIES: GALAGA
First appearing in arcades in 1981, the masterpiece GALAGA finally comes to Steam! Move the fighter left and right and destroy the waves of incoming aliens!
Battlezone 98 Redux
One of the greatest sci-fi strategy games of all time returns with remastered visuals, online multiplayer and near unlimited mod content from Steam Workshop. Experience thrilling first person action and acclaimed RTS in this explosive alternate vision of the 1960s space race.
Spaceport Hope
A huge hand-crafted world packed with 13 unique bosses, a gripping story, and tons of enemies, Spaceport Hope is the ultimate test of gaming prowess.
Apollo 11 VR
Apollo 11 VR is the story of the greatest journey ever taken by humankind. This VR experience is a recreation of the events which took place between July 16th and July 24th 1969. Now for the first time ever you get to experience this historic event through the eyes of those who lived through it.
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.
Polaris Sector
Can anyone build an empire in a place like this? Other factions are naturally suspicious of newcomers and may wage war at the first sign of unidentified craft. Here, a natural death is an uncommon luxury.
Overload Playable Teaser 3.0
A playable demo of the game Overload, a new six-degree-of-freedom shooter from the creators of Descent. Version 3.0 is from April 2018.
Chicken Invaders 2
Just when you thought it was safe to eat chicken again, the chickens have returned with an organized invasion to take over the entire solar system! Journey to each planet and fight your way through to save the world (again)!
Space Pilgrim Episode IV: Sol
Locked away in the most secure prison in the galaxy, with little hope of escape, Gail Pilgrim faces the most difficult ordeals of her life. Her only hope lies in trusting those who she has come to regard as her friends.
Sunrider: Liberation Day - Captain's Edition
Liberation Day will come... but you will be betrayed. Experience the stunning continuation of Sunrider Mask of Arcadius in this hardcore turn based tactics game with heavy story elements.
Master of Orion 1
Forge an empire in a universe where population growth is stripping away planetary resources. Colonize unknown planets and trade with other races for their knowledge.
Pixel Puzzles 2: Space
Pixel Puzzles 2: Space is a traditional style jigsaw puzzle game in a universal style, each piece uniquely shaped like no physical puzzle could be.