The game consists of a deck of 53 cards. On each card is a different cat breed, belonging to one of 17 different subgroups. Each player gets five cards from the start. Each round you get to ask one player for a certain cards that you need to complete a subgroup. If the other player has the card, you get it and can ask for another card. If the other player doesn't have the requested card, you have to take a card from the draw pile and it's the next player's turn. When you have a complete subgroup, you put it on the table. When the deck runs out, you count the score.