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!

Terraria - Dig, Fight, Build! The very world is at your fingertips as you fight for survival, fortune, and glory.

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.

Minecraft - A block-building game that allows you to create and explore entire worlds from scratch.

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.

Terasology - Terasology (started under the name Blockmania) is an open source project started by Benjamin...