The game rules are simple: the board consists of blocks which designate the mouse movement. You need to click on blocks to turn them 90 degrees clockwise, and let the mouse empty rows (eat a piece of cheese in each one) for the empty row to disappear. The row vanishes as the mouse leaves it. New rows keep falling down. As soon as they fill the board, the game is finished. That's all.
To compete against other players, please click the menu (upper left) button, enter a player name and a password (up to 10 characters).
When the game is finished, you'll see the Top Players list. If you're logged in, your result is stored here. If you're not in top 20, you can see more results on the game website
The game is also available free for computers running Windows and Arch Linux. Check the website at http://nwg.pl/cheese to learn more.