Single-player games like Purplis Sandbox
Below are 9 single-player Steam games similar to Purplis 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 Purplis Sandbox page.
Ranked picks
- 1

Water Physics Simulation
Single-player alternative to Purplis Sandbox — playable solo, no multiplayer required. Shares Indie and Simulation with Purplis Sandbox.
Water Physics Simulation & Sandbox! Build ships and let them sink! Build cars and let them sink! Use bombs and destroy ragdolls. Play with natural disasters or create towns.
- 2

PixPhys
Single-player alternative to Purplis Sandbox — playable solo, no multiplayer required. Shares Indie and Simulation with Purplis Sandbox.
PixPhys is a 2D engineering sandbox with huge technical possibilities and scope for imagination: design equipment from a jet-powered cart to space stations.
- 3

ACTION SANDBOX
Single-player alternative to Purplis Sandbox — playable solo, no multiplayer required. Shares Simulation with Purplis Sandbox.
A physics sandbox game for people who like to play with digital toys. Create, control toys and define your goals.
- 4

Fun with Ragdolls: The Game
Single-player alternative to Purplis Sandbox — playable solo, no multiplayer required. Shares Indie and Simulation with Purplis Sandbox.
Become a ragdoll and create your own environments in Sandbox Mode, explore worlds created by others, or just flop around your destructible sets! Fun with Ragdolls®: The Game lets you enjoy everything you love about ragdolls!
- 5

Timberborn
Single-player alternative to Purplis Sandbox — playable solo, no multiplayer required. Shares Indie and Simulation with Purplis Sandbox.
Humans are long gone. In a world struck by droughts and toxic waste, will your lumberpunk beavers do any better? A sandbox city-building game featuring ingenious animals, vertical architecture, water physics, and terraforming. Contains high amounts of wood.
- 6

People Playground
Single-player alternative to Purplis Sandbox — playable solo, no multiplayer required. Shares Indie and Simulation with Purplis Sandbox.
Shoot, stab, burn, poison, tear, vaporise, or crush ragdolls in a large open space.
- 7

Sand:box
Single-player alternative to Purplis Sandbox — playable solo, no multiplayer required. Shares Indie and Simulation with Purplis Sandbox.
"Falling sand" style particle sandbox, now with circuits and stickmen!
- 8

Sandboxels
Single-player alternative to Purplis Sandbox — playable solo, no multiplayer required. Shares Indie and Simulation with Purplis Sandbox.
Falling-sand sandbox game with 500+ elements, chemistry, fire, life, food, and anything you can imagine.
- 9

Starbound
Single-player alternative to Purplis Sandbox — playable solo, no multiplayer required. Shares Indie with Purplis Sandbox.
You’ve fled your home, only to find yourself lost in space with a damaged ship. Your only option is to beam down to the planet below, repair your ship and set off to explore the universe...