Pixelworld Sandbox

This is a falling sand game, in the vein of powder toy, Enigma sand, pyrosand, etc. If you don't know what those are, they are just little 2D simulations where you can add elements & effects to a box, and watch what happens.

Pixelworld Sandbox was an experiment to see how far the genre could go, with a prototype multiplayer, full support for adding your own elements, no limit on resolution and more.