Sonic Shuffle is a party game for up to four players, playing like a board game in a similar fashion to the Mario Party series.[2] The game is set in a dream world called "Maginaryworld", where a fairy asks Sonic the Hedgehog, Tails, Knuckles the Echidna, and Amy Rose to retrieve "Precioustones" to help her save Maginaryworld from Void, the game's villain.[3][4] The players can choose to play as one of these four characters, or Big the Cat, E-102 Gamma, Super Sonic, and a Chao if unlocked later. Each character has unique abilities they can use to traverse the game boards.[3]
Players take turns moving across the board in an effort to collect the most Precioustones; this is done by picking cards and moving the amount of spaces specified on it. Each player is dealt seven cards at a time, and their deck is visible on their personal VMU screen in their controller, keeping it a secret from other players.[c] When it is a player's turn to move, they can choose to play a card from their hand, or play a random card from another player's hand. There is also a card which can be used to steal cards, swap hands with another player, or move one to seven spaces as decided by a short slot machine style game. Finally, there is a card that will summon Doctor Eggman, who will steal the player's rings or swap their position on the board with another player.[2]