Alter is a 52 card deck game of strategy, bluffing, and a bit of luck. Count the value of your cards to get to 21, but can you get there when the value of your cards change? The value of cards can be changed with either an "Alter" or "Revert" card. The object of the game is to reach 21 by the beginning of your turn, meaning even if you have 21 points it can still change. You can either try to win by getting to 21, or outlast all the other players until the deck runs out and highest score wins. Card values are kept track of by a card counter and tokens, which are provided with the game. —description from the publisher