Swap diamonds to put together three same diamonds. Once you have put together at least 3 diamonds of same colour, they will explode and from the top of the screen new ones will be supplied. The game is over when you cannot switch any diamonds in the given time. The game has two modes. "Twix" mode or "Square" mode. If you want to increase difficulty in "Twix" mode you have to explode a certain number of diamonds. If you want to increase difficulty in "Square" mode you have to explode a diamond in each square of the playing area.