Score 21 is a single player game where you play with five hands trying to get twenty one or as close to with each one. You have one deck to deal from, and can select which hand to hit. You also have up to three passes per round to skip cards. This addictive game includes two modes, classic of challenge. Classic mode lets you go through six rounds as you attempt to get as many 21's as you can without busting or taking the current score to move on to the next round. Challenge mode lets you have multiple 'skip' cards and resets every hand when it reaches 21 so that you can try to reach the maximum goal, two hundred and ten black jacks without busting!