Free games like 3D Solar System Simulator
Below are 9 free-to-play Steam games similar to 3D Solar System Simulator, ranked by player overlap and content similarity. No purchase or Steam login required to view the list. Every pick is a full free-to-play title — not a demo, trial, or time-limited giveaway. imho.run's catalogue refreshes daily, so newly free or newly popular titles surface here without manual editing.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like 3D Solar System Simulator page.
Ranked picks
- 1
Steam Engine Simulator
Free-to-play alternative to 3D Solar System Simulator — no purchase or trial window. Shares Simulation with 3D Solar System Simulator.
The Steam Engine Simulator shown on AngeTheGreat's YouTube channel.
- 2
The Lab
Free-to-play alternative to 3D Solar System Simulator — no purchase or trial window.
Welcome to The Lab, a compilation of Valve’s room-scale VR experiments set in a pocket universe within Aperture Science. Fix a robot, defend a castle, adopt a mechanical dog, and more. Still not sold? It’s free!
- 3
DORONKO WANKO
Free-to-play alternative to 3D Solar System Simulator — no purchase or trial window. Shares Simulation with 3D Solar System Simulator.
『DORONKO WANKO』 is a DORONKO Action Game. In this game, You can become a cute, innocent Pomeranian, make your master's home messy and dirty. "Will the master be angry with me?" Don't worry. Because you are a sweet doggie.
- 4
Landfall Archives
Free-to-play alternative to 3D Solar System Simulator — no purchase or trial window.
Break into the Landfall Archives to steal and play previously unreleased games, demos, interactive slide shows, and even an unreleased version of Totally Accurate Battle Simulator from 2017!
- 5
SuchArt: Creative Space
Free-to-play alternative to 3D Solar System Simulator — no purchase or trial window. Shares Simulation with 3D Solar System Simulator.
Paint on any surfaces with numerous tools in Creative Space — a free sandbox version of SuchArt: Genius Artist Simulator. Create masterpieces, complete commissions, and decorate your studio in the most advanced artist sim!
- 6
Crime Scene Cleaner: Prologue
Free-to-play alternative to 3D Solar System Simulator — no purchase or trial window. Shares Simulation with 3D Solar System Simulator.
When there’s a call, you are the man to clean up after your client’s dirty job. Siding with the mafia is a dangerous game, but they pay well, and you need money, right? So take your mop and better remove those bloodstains quickly before the police come.
- 7
Jigsaw Puzzle Dreams
Free-to-play alternative to 3D Solar System Simulator — no purchase or trial window.
Beautiful Multiplayer Jigsaw Puzzle game where you can design the room you play in!
- 8
The Sims™ 4
Free-to-play alternative to 3D Solar System Simulator — no purchase or trial window. Shares Simulation with 3D Solar System Simulator.
Play with life and discover the possibilities. Unleash your imagination and create a world of Sims that’s wholly unique. Explore and customize every detail from Sims to homes–and much more.
- 9
Lunar Odyssey
Free-to-play alternative to 3D Solar System Simulator — no purchase or trial window. Shares Simulation with 3D Solar System Simulator.
Don your xEMU Spacesuit, explore the Orontius Crater, and Lunar Module in an immersive first-person VR experience with out of this world accuracy and interaction. Follow real-life procedures, launch the Apollo-era Lunar Module, play Space Golf, and experience the moon like never before.