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

Sediment
Single-player alternative to Sandboxels — playable solo, no multiplayer required. Shares Indie and Simulation with Sandboxels.
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

SunaBox - The Particle Sandbox That Remembers
Single-player alternative to Sandboxels — playable solo, no multiplayer required. Shares Indie and Simulation with Sandboxels.
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.
- 3

Sand in a Box
Single-player alternative to Sandboxels — playable solo, no multiplayer required. Shares Indie and Simulation with Sandboxels.
Sand in a Box is a 'falling sand' game that simulates thermal flow, electricity, radioactive decay, and gravity. Create art, experiment with physics, and craft your own simulation rules with user-friendly mod support!
- 4

Crafty Marbles
Single-player alternative to Sandboxels — playable solo, no multiplayer required. Shares Indie and Simulation with Sandboxels.
Build crazy marble machines and mess with marbles! Grab, throw, split, fuse, breed, slingshot, and unleash ridiculous chain reactions!
- 5

Parametric Creature: Lab
Single-player alternative to Sandboxels — playable solo, no multiplayer required. Shares Simulation with Sandboxels.
Explore and create parametric creatures
- 6

Substrate: Emergence
Single-player alternative to Sandboxels — playable solo, no multiplayer required. Shares Indie and Simulation with Sandboxels.
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.
- 7

Marquito's Arcade - Play while Learning
Single-player alternative to Sandboxels — playable solo, no multiplayer required. Shares Indie and Simulation with Sandboxels.
Have fun and learn with this collection of educational games. Each one with different gameplays. Featuring: Cell Works - Chemibot Helps the City - Gaia and the Weather Powers - Super Pizza Delivery - Itchy Earth.More Games will Come!
- 8

IDLE Animal Anatomy
Single-player alternative to Sandboxels — playable solo, no multiplayer required. Shares Simulation and Casual with Sandboxels.
A colorful clicker simulator where you can yourself grow a living creature cell by cell! Watch how organs, bones and skin are growing! Feel like a real scientist by becoming a pet creator!
- 9

The Sandbox
Single-player alternative to Sandboxels — playable solo, no multiplayer required. Shares Indie and Simulation with Sandboxels.
READY FOR CRAFTING VIRTUAL WORLDS ON YOUR PC?The acclaimed world-building game featuring a unique mission-based approach is coming onto PC via Steam Early Access. With over 16 million players on mobile & tablets versions and 1,500,000 pixel blocks creations shared in the Online Gallery to date, this PC version is taking world...
- 10

Minecraft: Story Mode - A Telltale Games Series
Single-player alternative to Sandboxels — playable solo, no multiplayer required.
Episode 1 is now FREE - for a limited time! In Minecraft: Story Mode, playing as either a male or female hero named 'Jesse,' you’ll embark on a perilous adventure across the Overworld, through the Nether, to the End, and beyond.