Blocks you can stack -- and when you scream at them they fall down. INSTRUCTIONS Regular mode: Drag and drop blocks Make noise: Clap or scream to shake all the blocks (this won't work online) space to draw left,right,up,down,0: change flow of gravity a,/b: toggle return to center on/off HOW I MADE THIS This project uses gravity. The building blocks fall down until they are touching the hot-pink color. MORE IDEAS Is this really gravity? Maybe you can improve the simulation. Can you make the blocks bouncy? Can you can make blocks in other shapes, so you can build buildings?