You pick from five girls, chosing one as your player character, and engage in a card battle against the other girls. The characters lose clothing with health, and the loser of each round is shown nude. The card system is rather unique, with a "charger" that can be used to up the value of the card stored there. The system isn't too hard once you realize that playing two of the identical attack card deals massive damage. Just try to charge the cards up to match and play pairs, and you should be able to win.