Early Access
Space Sim games currently in Steam Early Access, scored by how recently and how regularly they ship updates. Filtered to actively updated.
4 games in this view have a Steam AI disclosure. They stay hidden until you ask for them.
Show AI-disclosed gamesShowing 1–15 of 15 actively updated. AI-disclosed games are hidden.
Riftborne is a classic terminal based, real time, grand strategy game. Construct space ships. Take part in factional warfare. Hire galactic hit-men on your rivals. Raid neighbors for rare resources. Train spies to infiltrate enemy bases for key intel. Grow your empire to dominate the galaxy.
Pitio Productions · Last signal today · 92% positive · 3 playing
Consistency
Irregular
51/100
A retro sci-fi deckbuilder where enemies play by the same rules as you. Command your ship, build powerful deck combinations, and watch your decisions unfold in fast-paced, satisfying space combat.
k-critical · Last signal today · 99% positive · 1 playing
Consistency
Consistent
63/100
Super Cloud Fight allows you to experience a unique way of aerial combat with customizable planes, special combat maneuvers and powerups. Play with AI bots, friends or competitors!
Engaged · Last signal today · 95% positive · 0 playing
Consistency
Rarely updated
12/100
Stardeus is a deep colony sim set on a broken starship manned by drones and hibernating human survivors. As the AI, have your drones repair your ship, save your crew and travel the stars in this beautiful simulation.
Kodo Linija · Last signal today · 87% positive · 22 playing
Consistency
Rarely updated
18/100
A single-developer passion project. A seamless full scale solar system. Thrilling action. Be part of an incredible journey as a Universe is built from the ground up!
Elliptic Games · Last signal 3 days ago · 93% positive · 2 playing
Consistency
Rarely updated
6/100
BattleGroupVR2 is a virtual reality real-time space strategy where you explore the galaxy and lead a fleet of powerful warships from the bridge of your flagship. Explore, mine, trade, hunt. Grow your fleet, upgrade your ships, train your captains, and battle the enemy from the captain's chair.
SpaceOwl Games · Last signal 4 days ago · 86% positive · 2 playing
Consistency
Irregular
53/100
Astrox Imperium is a relaxing space game where you fly around a generated universe. Mining, Fighting, Building, Exploring, and Surviving. What makes this game unique? You have complete control of how it plays. A robust sandbox and lots of MOD tools. Make it your game, and play it your own way.
Jace Masula · Last signal 4 days ago · 84% positive · 14 playing
Consistency
Sporadic
32/100
Design and simulate the starships of your dreams! Command your ship or fleet in epic battles and manage your crew while exploring a dangerous galaxy. Play alone or with friends, test your ships in online PvP, and let your imagination reach for the stars!
Walternate Realities · Last signal 4 days ago · 94% positive · 334 playing
Consistency
Irregular
41/100
Build the most efficient intergalactic factory in space simulation strategy game Dyson Sphere Program! Harness the power of stars, collect resources, plan and design production lines and develop your interstellar factory from a small space workshop to a galaxy-wide industrial empire.
Youthcat Studio · Last signal 5 days ago · 97% positive · 1.8k playing
Consistency
Irregular
41/100
Create & destroy on an unimaginable scale with a realistic physics-based space simulator. Explore the beauty of our universe and the fragility of our planet. Use science to bend the laws of gravity, collide planets, boil away oceans, fire epic space lasers, and customize your universe.
Giant Army · Last signal 6 days ago · 96% positive · 372 playing
Consistency
Irregular
56/100
Configure the weaponry on your ship to blast away enemies as you navigate through swarms of bullets and space battles. Each ship has unique customization options and playstyles.
Zeno's Adventure Team · Last signal 18 days ago · 89% positive · 12 playing
Consistency
Sporadic
29/100
Explore a procedurally generated galaxy, mine asteroids, refine minerals, colonize planets, build stations, deploy drones, salvage rare items, construct gear, level up, improve your ship, assemble a fleet, engage in combat, and take on the void.
Robin M. Farrell · Last signal 35 days ago · 95% positive · 5 playing
Consistency
Sporadic
35/100
Flight of Nova is a simulator based on newtonian mechanics in which you control spacecraft in the Noren star system. You fly multiple types of spacecraft doing transport and search missions in an environment with realistic aerodynamics and orbital physics.
Aerovery Lab · Last signal 36 days ago · 93% positive · 7 playing
Consistency
Rarely updated
13/100
Step aboard the USS Orville (ECV-197), the Planetary Union's finest mid-level exploratory class cruiser. With every room on every deck recreated with painstaking accuracy, you are free to explore the ship at your leisure and engage in all manner of shenanigans!
Messy Desk Interactive · Last signal 39 days ago · 90% positive · 1 playing
Consistency
Sporadic
32/100
The world's first science-based photorealistic interactive 3D planetarium that models the entire Universe, using procedural generation for uncharted areas.
Cosmographic Software · Last signal 2 months ago · 96% positive · 193 playing
Consistency
Sporadic
35/100