Single-player games like Sand:box
Below are 9 single-player Steam games similar to Sand:box, 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 Sand:box page.
Ranked picks
- 1

Sandboxels
Single-player alternative to Sand:box — playable solo, no multiplayer required. Shares Indie and Simulation with Sand:box.
Falling-sand sandbox game with 500+ elements, chemistry, fire, life, food, and anything you can imagine.
- 2

Universe Sandbox
Single-player alternative to Sand:box — playable solo, no multiplayer required. Shares Indie and Simulation with Sand:box.
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.
- 3

Kerbal Space Program
Single-player alternative to Sand:box — playable solo, no multiplayer required. Shares Indie and Simulation with Sand:box.
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.
- 4

Teardown
Single-player alternative to Sand:box — playable solo, no multiplayer required. Shares Indie and Simulation with Sand:box.
Prepare the perfect heist in a fully destructible, simulated voxel world. Tear down walls with vehicles or use explosives to create your own shortcuts. Shape the environment to your advantage in the most creative ways you can imagine. Play solo or with up to 12 players in multiplayer.
- 5

Retro Gadgets
Single-player alternative to Sand:box — playable solo, no multiplayer required. Shares Simulation with Sand:box.
Retro Gadgets is a sandbox where you build, code, and customize gadgets inspired by old-school electronics.
- 6

Brick Rigs
Single-player alternative to Sand:box — playable solo, no multiplayer required. Shares Simulation with Sand:box.
Build your own vehicles or download one of the more than 200,000 creations already uploaded to the Workshop and experience the dynamic driving and destruction physics of Brick Rigs!
- 7

Virtual Circuit Board
Single-player alternative to Sand:box — playable solo, no multiplayer required. Shares Simulation with Sand:box.
Virtual Circuit Board is the sandbox drawing-based logic simulator where you can build, program, decorate, and simulate anything from simple monochrome circuits to complex and colorful computers. Play with digital logic in this sandbox-only experience.
- 8

Logic World
Single-player alternative to Sand:box — playable solo, no multiplayer required. Shares Indie and Simulation with Sand:box.
Invent a new computer! Logic World is a first-person sandbox simulation game that's all about digital logic. Play alone or with friends, design unique machines, build up layers of complexity, and experience the joy of circuits!
- 9

People Playground
Single-player alternative to Sand:box — playable solo, no multiplayer required. Shares Indie and Simulation with Sand:box.
Shoot, stab, burn, poison, tear, vaporise, or crush ragdolls in a large open space.