Click a tile to flip its colour, but watch out it also flips the neighbouring tiles. A simple yet puzzling game!
Update 1: Oops! I'd forgotten to enable the Help screen, thank
Update 2: Fixed a font problem that was happening. Had to change it as flash was being stupid and not wanting to embed it :(
Update 3: fixed a bug if your bonus goes below zero, it would 'flip' out ;P