The Powder Toy - The Powder Toy is a desktop version of the classic 'falling sand' physics sandbox game, it simulates air pressure and velocity as well as heat!

Roblox - Reimagining the way people come together.

Powder Game - When whirlwind picks up the leaves, flow of the wind is visible and interesting. Simulation game that reproduces such phenomenon with powder (dot)! Let's vote by playing various uploaded works.

Blockland - Blockland is a non-competitive multiplayer sandbox-style construction game. It's kind of like playing with legos on the internet.

Sandboxels - Sandboxels is an in-browser falling sand simulation game, with mechanics such as heat simulation, electricity, density, chemical reactions, fire, explosions, and over 500 unique elements to play with.

Garry’s Mod - Garry’s Mod is Funny, Sandbox, Co-op, Building, FPS, Action, Single and Multiplayer video game created by Facepunch and published by Valve.