A simulation of a pottery wheel. You can carve with your finger using a Leap Motion Controller or, if you don't have a Leap plugged in, with your mouse or touchpad.
If you just touch the side edge of the clay, it carves a little. If you touch toward the center, it carves a lot. You can switch between fast and slow rotation of the wheel using the Space bar. To reset the clay and start over, press Delete.