10-20-30 is a single player card game in which you group cards that add up to 10, 20 or 30. You start with four piles plus the deck, taking cards off in groups of three that add up to 10, 20 or 30. You can take cards off the top or the bottom, or a combination of the two, from the active pile. Each time you move to the next pile a card is dealt to it. The object of the game is to empty all the piles. The computer takes care of the frequent reformatting of the piles during play. 10-20-30 also includes auto-play where the computer will automatically finish the game once you have only one pile of cards left. 10-20-30 features include card pile counters, statistics, and sound effects.