Single-player games like Spike's Particle Sandbox
Below are 8 single-player Steam games similar to Spike's Particle Sandbox, 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 Spike's Particle Sandbox page.
Ranked picks
- 1
Sediment
Single-player alternative to Spike's Particle Sandbox — playable solo, no multiplayer required. Shares Indie and Simulation with Spike's Particle Sandbox.
A pixel-physics sandbox. Fifty materials, and every one of them is physics: sand finds its angle, water freezes, lava crusts into stone, gunpowder blows. Build your own materials and worlds, and share them in the Workshop.
- 2
Meco Rocket Simulator
Single-player alternative to Spike's Particle Sandbox — playable solo, no multiplayer required. Shares Simulation with Spike's Particle Sandbox.
Meco Rocket Simulator is a realistic physics game where you play as an underpaid rocket scientist working for Mecodyne to design and test rocket engines without regard for your safety.
- 3
Sand:box
Single-player alternative to Spike's Particle Sandbox — playable solo, no multiplayer required. Shares Indie and Simulation with Spike's Particle Sandbox.
"Falling sand" style particle sandbox, now with circuits and stickmen!
- 4
Planet Architect
Single-player alternative to Spike's Particle Sandbox — playable solo, no multiplayer required. Shares Indie and Simulation with Spike's Particle Sandbox.
A planet-building sandbox where you create entire worlds from the ground up. Generate unique planets, shape vast landscapes, and use interconnected simulations inspired by real-world processes to bring your fantasy planet to life.
- 5
Kerbal Space Program
Single-player alternative to Spike's Particle Sandbox — playable solo, no multiplayer required. Shares Indie and Simulation with Spike's Particle Sandbox.
In Kerbal Space Program, take charge of the space program for the alien race known as the Kerbals. You have access to an array of parts to assemble fully-functional spacecraft that flies (or doesn’t) based on realistic aerodynamic and orbital physics.
- 6
Universe Sandbox
Single-player alternative to Spike's Particle Sandbox — playable solo, no multiplayer required. Shares Indie and Simulation with Spike's Particle Sandbox.
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.
- 7
Satellite Command
Single-player alternative to Spike's Particle Sandbox — playable solo, no multiplayer required. Shares Indie and Simulation with Spike's Particle Sandbox.
Satellite Command is a realistic, relaxing astrophysics simulator. Complete contracts with real data, launch and take control of ever more powerful Satellites, research advanced technology and build your Space Agency!
- 8
Rover Mechanic Simulator
Single-player alternative to Spike's Particle Sandbox — playable solo, no multiplayer required. Shares Indie and Simulation with Spike's Particle Sandbox.
As an Engineer - crew member of one of the first Mars colonies - you are responsible for repairing and maintaining Mars Rovers. In this advanced simulator you will learn the internal details of various Mars Rovers and their components.