1 Harness gravity with your crayon and set about creating blocks,
2 ramps, levers, pulleys and whatever else you fancy to get the little
3 red thing to the little yellow thing.
5 Numpty Physics is a drawing puzzle game in the spirit (and style?)
6 of Crayon Physics using the same excellent Box2D engine.
8 WWW: http://numptyphysics.garage.maemo.org/