It is played with two-sided (black and white) chips, also called discs, on a board. The player can choose between black or white chips. Games are either player versus computer or player versus player. The goal is to end the game with as many chips showing your color as possible. To do this, players must sandwich their opponents' chip(s) between a piece of their own color already on the board, and the piece being played. The game has four skill levels when playing the computer, as well as a hidden fifth level if you beat the computer on level four.