Mausi the Mouse visits her friends the goose, the cow, the horse, the rabbit and the pig and hides with one of them. Players have to guess where Mausi is hanging for the day, winning the card on which she's located if they do. Be the first to reveal cards with all five friends on them and you win.

Each player has five cards depicting the animal friends, and these are shuffled and placed face-down before the player. On a turn, the player rolls the die, flips an animal card in front of her, and hopes it shows the animal on the die; if so, the card stays revealed; if not, the card is flipped face-down again. Roll an animal that's already revealed, and you can flip a card of your choice. Roll the moon, and one of the timing cards is flipped. The game ends when one player finds all five friends or time runs out, in which case no one wins.