Rack n ’Roll is a game played with two alliances, one red and one blue, composed of three teams each. The object of the game is to attain a higher score than your opponent alliances by placing toroidal game pieces on the central goal structure (the rack), and/or by having robots in their home zone and not in contact with the playing field at the end of the match.
A match is 2 minutes and 15 seconds long. A brief between autonomous period starts each match in which the ROBOTS are controlled by pre-programmed instructions. The between autonomous period is followed by the tele-operated period during which the drivers assume control of the robot. There may be a short pause between autonomous period and the start of the tele-operated period as the player's stations are activated. The final portion of the tele-operated period is known as the end game. The end game is played as a continuation of the tele-operated period, except robots are not permitted in their opponent's home zone.
Go to first wikipedia 2007 to read more about the game.