It's the classic game of "Rocks, Paper, Scissors".but with cards and "Blasto Bob!" Win by being the first player to discard all cards and slam your hand on the discard pile saying "Slam!" Players discard cards based on which card would beat the current card facing up-for example, if a rock card was played, a player should put down a paper card, which in turn should be covered by a scissors card. "Blasto Bob" cards are used as wildcards. A fun and zany game for the family! 40 cards.