Single-player games like Sand in a Box
Below are 8 single-player Steam games similar to Sand in a 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 in a Box page.
Ranked picks
- 1
SunaBox - The Particle Sandbox That Remembers
Single-player alternative to Sand in a Box — playable solo, no multiplayer required. Shares Indie and Simulation with Sand in a Box.
Paint 27 kinds of matter. Set it on fire. Then press rewind. SunaBox is a physics sandbox in the spirit of the legendary OE-CAKE, on a bit-exact engine: every session can be replayed, rewound, saved, and shared to reproduce your world perfectly.
- 2
Sediment
Single-player alternative to Sand in a Box — playable solo, no multiplayer required. Shares Indie and Simulation with Sand in a Box.
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.
- 3
Crafty Marbles
Single-player alternative to Sand in a Box — playable solo, no multiplayer required. Shares Indie and Simulation with Sand in a Box.
Build crazy marble machines and mess with marbles! Grab, throw, split, fuse, breed, slingshot, and unleash ridiculous chain reactions!
- 4
Universe Sandbox
Single-player alternative to Sand in a Box — playable solo, no multiplayer required. Shares Indie and Simulation with Sand in a 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.
- 5
Substrate: Emergence
Single-player alternative to Sand in a Box — playable solo, no multiplayer required. Shares Indie and Simulation with Sand in a Box.
Grow colonies of fluorescent cells that mutate, swarm, and devour each other in a petri dish arena. Propagate a unique biology of your own as you compete against rival labs in a detailed artificial life simulation.
- 6
Sandboxels
Single-player alternative to Sand in a Box — playable solo, no multiplayer required. Shares Indie and Simulation with Sand in a Box.
Falling-sand sandbox game with 500+ elements, chemistry, fire, life, food, and anything you can imagine.
- 7
Terra Firma 2
Single-player alternative to Sand in a Box — playable solo, no multiplayer required. Shares Indie and Simulation with Sand in a Box.
Shape breathtaking worlds in Terra Firma 2, a vast simulation where your creations evolve through the forces of nature. Sculpt the land, then watch as weather, erosion, and life itself transform your world into a dynamic, living ecosystem- right down to every plant and creature.
- 8
Natural Instincts: European Forest
Single-player alternative to Sand in a Box — playable solo, no multiplayer required. Shares Indie and Simulation with Sand in a Box.
Protect the environment, and save it from harm! Give commands to the animals, observe their rituals and help them survive. Face different disasters, react to human presence and help the animal kingdom flourish in this unique, environmental experience!