How do you play the game Rat-a-Tat Cat?

To play the game Rat-a-Tat Cat, players try to get the lowest score by swapping cards in their hand with cards in the draw pile. The goal is to have the lowest total value of cards in your hand when the game ends. Players can peek at their own cards and use strategy to remember which cards they have swapped. The player with the lowest score at the end of the game wins.