is a puzzle game with a simple concept: the player must assemble all the boxes (called "boxonites" in the game) of a same colour to make them disappear, as fast as possible. The player can drag the boxes in the empty spaces, and when two boxes of a same colour meet they are glued together and form a new shape, similar to Chocolate Castle
. The more the player progresses through the levels, the less space he has to move his boxes, forcing him to carefully plan his moves ahead. There are 553 levels in the game.