The player can play as Sonic, Tails, Knuckles or Amy Rose. Once a character is selected, the player faces against the other characters in a game of Hearts. The game plays out like a normal game of hearts, with the goal being to get rid of all your cards to get the lowest score possible or "shoot for the moon" and get all 14 penalty cards. After 4 rounds, the player with the least points total is the winner. Players can upload their high-scores to the high-scores server.
- at the Sonic Cafe website.