Be the first to have five of your pieces showing.The player who is the mouse starts first. You may move your own pieces or your opponent's. You can start a stack or place a piece on top of another. Pieces can only go 3 high. You can move pieces that are already in play, but not the piece that you opponent just moved.The winner is the first to have 5 cats or mice showing.As an alternative to playing a single game. Players may choose to play multiple games with a scoring system of 25 points for a win and 5 points for each piece not put in play at the time that the game is won. - BoardGameGeek