Atom21 is a BlackJack style card game, where your task is to turn all the cells to atom by creating card combinations that sum up to 21 before time runs out. The objective of the game is thus to convert all black colored cells to blue. All cards have their designated values, except dressed cards, which all have a value of 10, and aces, which can have a value of either 1 or 11. Use the Shuffle option when you are stuck, but remember that you only have a certain amount of shuffles.