Single-player games like PLANETOON
Below are 9 single-player Steam games similar to PLANETOON, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like PLANETOON page.
Ranked picks
- 1
Universalia
Single-player alternative to PLANETOON — playable solo, no multiplayer required. Shares Indie and Simulation with PLANETOON.
Sling new worlds into orbit inside real photographed skies. A zen physics game about gravity, patience, and the quiet joy of watching something you made keep turning. Fifteen handcrafted star systems. Every failure is a beautiful explosion.
- 2
Solar 2
Single-player alternative to PLANETOON — playable solo, no multiplayer required. Shares Indie and Simulation with PLANETOON.
Dynamic abstract sandbox universe. Changes and evolves as you do.
- 3
Inspiral: Echoes of Gravity
Single-player alternative to PLANETOON — playable solo, no multiplayer required. Shares Indie and Simulation with PLANETOON.
Start as an asteroid, grow by absorbing other celestial bodies to become a planet, a star, and ultimately a black hole. Experience realistic gravity and orbital physics in an ever-evolving sandbox universe.
- 4
Cosy Loops
Single-player alternative to PLANETOON — playable solo, no multiplayer required. Shares Indie and Simulation with PLANETOON.
Cosy Loops is a stress-free casual game. Forget about resource management—simply use your mouse to shape terrain, lay tracks, and plant lush greenery. Relax to soothing music as your little train explores your creations. It’s a peaceful, personalized canvas entirely up to you to draw.
- 5
It Takes One Year To Beat This Game
Single-player alternative to PLANETOON — playable solo, no multiplayer required. Shares Indie and Simulation with PLANETOON.
Make one billion clicks and spend years to beat the game or show who is a really pro gamer here
- 6
Solar Sandbox
Single-player alternative to PLANETOON — playable solo, no multiplayer required. Shares Indie and Simulation with PLANETOON.
Solar Sandbox is a space engine that allow for player to simulate n-body physics in space. Simulate large n-body physics or how would the Earth be effected by you changing it's orbit or how how many Jupiters you need to combine to get a star.
- 7
Terra Logic
Single-player alternative to PLANETOON — playable solo, no multiplayer required. Shares Indie and Simulation with PLANETOON.
Sculpt planets and landscapes, watch water and climate respond, and compare two versions of the same world. Import heightmaps, draw mountain ranges, and export flat terrain to Minecraft Java. Explore Earth, ancient continents and distant worlds at your own pace.
- 8
Universe Sandbox
Single-player alternative to PLANETOON — playable solo, no multiplayer required. Shares Indie and Simulation with PLANETOON.
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.
- 9
呪ショッピング
Single-player alternative to PLANETOON — playable solo, no multiplayer required. Shares Indie with PLANETOON.
You are shopping on a major online store when strange listings gradually begin to appear. The more you look into them, the more clearly the whole picture of a crime comes into view…