What are the rules and gameplay mechanics of the Rat-a-Tat Cat card game?

In Rat-a-Tat Cat, players aim to have the lowest score by swapping and peeking at cards to get the lowest possible hand. The game involves strategy, memory, and luck as players try to outwit their opponents. The game ends when a player thinks they have the lowest score and calls "Rat-a-Tat Cat." The rules are simple, but the gameplay can be challenging and engaging for players of all ages.