Paku Paku Smile lets the player take care of a virtual creature, called Paku. Paku must be fed, watered, played with, and cared. If you let Paku get too hungry, bored, or thirsty, he will start to feel unhappy. Caring for a Paku is not all work, though. There are several mini-games that you can play with your Paku, and a built in CD Player that makes Paku happy when played. Paku Paku Smile also features a save/load system, so that you can come back to your Paku at any time.