Space

Space Mechanic Simulator: Prologue is a story prelude to the full version, which will introduce you to the world of cosmic repairs, greedy corporations, and cutting-edge technology.

is an adventure game where you meet the Big Dipper, a star that grants wishes, and save the planet that has turned gray.

Play as one of 7 pilots in this thrilling sequel to a SHMUP classic. The time has come for a new generation of Psyvariars to rise… and save humanity.

Build a formidable factory and go dungeoning alone or with friends. Solve logic puzzles and automate resource collection and crafting, or venture into dungeons filled with dangers and rewards. Find your own ideal gameplay balance, as any unique path will advance the story!

Lock and load with Strike Force Delta in this action-packed sci-fi FPS! Play solo or team up to blast through hordes of Gacrux alien invaders, save humanity’s colonies, and dominate intense PvP showdowns. Gear up, soldier, and get ready to lead the Assault on Proxima!

DOOMBA is a sci-fi cleaning simulator adventure made from Ringling College. Your job? Clean the infected cargo ship and eliminate the source of the infection. Led along by the snarky ship AI, you'll pick up tools and upgrades along the way. Just be careful- In space, no one can hear you clean.

Explore the mysteries of Sol and experience exhilirating first-person shooter combat in Destiny 2. Unlock powerful abilities and collect unique gear across story missions, co-op, and PvP modes.

Build and explore in a true space sandbox survival adventure. Construct mighty capital vessels, sprawling planetary settlements, and vast space stations in your galactic journey to discover the mysteries of Empyrion!

Earth has been destroyed. Mankind is fractured. The galaxy is at war. But one hope remains: a new home for mankind. Probes detected a habitable planet in the Orion sector. You must fight your way to it, but nothing is as it seems. A more devious plan is underway that threatens the entire galaxy.

Halo: Spartan Assault brings the excitement of Halo combat to Steam for the very first time. Battle your way through 30 action-packed missions against the Covenant as you explore the origin of the Spartan Ops program featured in Halo 4. *DirectX feature level 10 required. *

Observation is a sci-fi thriller uncovering what happened to Dr. Emma Fisher, and the crew of her mission, through the lens of the station’s artificial intelligence S.A.M.

CryoFall is a sci-fi colony simulation survival game set on a forgotten planet in a distant future. Master technology, agriculture, trading, industry, cybernetics, exploration, and more!