An electronic dice roll gives players a target number, and kids (or parents) race to add or subtract the light-up numbers one through 9 at their station. Once a player has used all of his numbers, he's scored a knockout. Players can also train for matches in solo mode. The announcer’s voice, starting bell and roaring crowd send fighters into the ring ready to rumble. It features volume control and automatic shut-off, and includes an Activity Guide. An AC adapter is available separately. Launch date: April 2, 2009.