If you have Homebrew Channel installed on your Nintendo Wii, then you can play the this puzzle/platform game. With a steady hand you need to control some sand on the screen such that you get it to the finish area without loosing too much in the process. By twisting the Wii remote you rotate the board, and thus determine where the sand should go. In some stages it is possible to put more stone on the board in order to control the sand.
It is also possible to play 2 players against each other simultaneously, where you are competing to complete the levels fastest.

The program is here (old versions: 1.0, 1.1, 1.2, 2.0, 2.0.1, 2.1, 2.2).

A few screenshots from the game: