Games like Sirius on Steam
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Mahou Arms
Mahou Arms is an anime-inspired character-action hack and slash that tells the story of a magical girl paramilitary group fighting back against an alien invasion.
Feed and Grow: Fish
Hunt and eat other fish - simply, grow into larger beasts!
X3: Reunion
X3: Reunion continues the epic space saga, blending deep space trading and intense real-time combat. Explore a vast universe, establish your empire, and shape the new frontier. With enhanced graphics and intricate economies, it's a journey of strategy, simulation, and interstellar intrigue.
Cactus Simulator
Cactus Simulator is a game in which you can become a cactus.
Island 359™
Island 359 is a Virtual Reality survival game for the HTC Vive and Oculus Touch. Players will scrounge for weapons, upgrades, food, and other items they can find to survive for as long as they can against hordes of dinosaurs, as they explore the increasingly dangerous, beautiful, and expansive island.
Bird Assassin
Birds murdered your Pa! His final wishes are for vengeance. Take your Pa's rifle and kill as many birds as you can to avenge his death. Battle a variety of enemies and bosses on your quest to kill the bird that murdered your Pa.
Windlands 2
Windlands 2 is a built-for-VR fantasy action adventure game, use grappling hooks and a bow to explore the vast mysterious world to take down gigantic titans alone or with friends.
Endless Sky
Endless Sky is a 2D space trading and combat game inspired by the classic Escape Velocity series. Work your way up from a relatively wimpy shuttle, cargo ship, or fighter, to a highly upgraded and customized flagship or to a massive fleet of warships or freighters.
SPACERIFT: Arcanum System
At the sunset of human life on planet Earth, you are a military pilot controlling a space ship, and you find yourself at the very epicenter of the battle in the solar system. You are forced to retreat into the unknown, distant Arcanum system through hyper-jumping.
Sun Blast: Star Fighter
Sun Blast is the best 3d space shooter on Steam. Earn upgrades as you fight your way through a huge seleciton of levels. Full gamepad support!
Elite Dangerous
Take control of your own starship and blaze your trail in an ever-changing galaxy. Master the arts of combat, mining and trade or venture out into the unknown across a 1:1 scale universe.
Hyper Light Breaker
A brand-new entry in the Hyper Light franchise, Hyper Light Breaker is an open world rogue-like with a unique world fully realized in 3D for the first time.
Tree Simulator 2022
It's exactly what it sounds like, but now with 100% more multiplayer. You are the tree and so is everyone else! You are equaled by no other, except maybe the forest... Relax and be the best tree you can be.
HerrAnwalt: Lawyers Legacy
You’re a Lawyer who tries to save students from a crazy headmaster. You need to survive a variety of school lessons and fight the different teachers