Single-player games like Planet Genesis 2
Below are 10 single-player Steam games similar to Planet Genesis 2, 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 Planet Genesis 2 page.
Ranked picks
- 1

Starship Simulator
Single-player alternative to Planet Genesis 2 — playable solo, no multiplayer required. Shares Simulation and Free To Play with Planet Genesis 2.
Explore a scientifically accurate Milky Way galaxy and discover distant uncharted worlds, while having unrestricted access to every deck of your Magellan Class deep space exploration vessel. Interact with numerous fully simulated ship systems, or simply relax in the bar and watch the stars drift by.
- 2

Solar System Simulator
Single-player alternative to Planet Genesis 2 — playable solo, no multiplayer required. Shares Simulation and Casual with Planet Genesis 2.
Gravity and exploration sandbox
- 3

Space Crash Simulator
Single-player alternative to Planet Genesis 2 — playable solo, no multiplayer required. Shares Simulation and Casual with Planet Genesis 2.
Real-time planetary collision sandbox powered by SPH physics: smash planets together and watch the destruction and its aftermath!
- 4

Terapixel Mars
Single-player alternative to Planet Genesis 2 — playable solo, no multiplayer required. Shares Simulation with Planet Genesis 2.
Terapixel Mars is a real-time planetary experience that lets you traverse the Red Planet seamlessly from orbit down to the surface. Powered by the Terapixel engine, Mars is stored in the cloud and streamed to your system, enabling a level of scale and immersion unmatched by any existing experience.
- 5

Rocket Science
Single-player alternative to Planet Genesis 2 — playable solo, no multiplayer required. Shares Simulation with Planet Genesis 2.
Take part in a space program. Design spacecrafts and send them off to explore the vast expanses of space. Experience the real scale of the Solar system and the size of its celestial bodies.
- 6

Enter The Moon
Single-player alternative to Planet Genesis 2 — playable solo, no multiplayer required. Shares Simulation with Planet Genesis 2.
Space simulation moon game. Explore the moon, mars, venus and mercury in breathtaking real-time 3D. Explore their geological aspects. Battle against spaceships or a secret lunar base. Enter the ISS. Measure the moon. And get in the cockpit.
- 7

Lunar Odyssey
Single-player alternative to Planet Genesis 2 — playable solo, no multiplayer required. Shares Simulation with Planet Genesis 2.
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.
- 8

Galactic Simulator 3
Single-player alternative to Planet Genesis 2 — playable solo, no multiplayer required. Shares Simulation and Casual with Planet Genesis 2.
Galactic Simulator 3 is a space exploration and evolution sim inspired by the Fermi Paradox and Great Filter theory. Scan uncharted star systems, gather resources and samples, establish outposts and stargates, and witness the rise and fall of civilizations across an ever-evolving galaxy.
- 9

FUR Squadron
Single-player alternative to Planet Genesis 2 — playable solo, no multiplayer required.
The FUR Squadron faces a mysterious threat during what appears at first to be routine virtual reality training.
- 10

FUR Squadron Phoenix
Single-player alternative to Planet Genesis 2 — playable solo, no multiplayer required.
Embark on an action-packed adventure in this on-rails space shooter. As a pilot in training, you’ll battle in strange virtual worlds. Master your ship, upgrade your skills, and protect the federation from an imminent threat. Are you ready for the challenge?