Sonic Shuffle is a party game developed by Sonic Team and Hudson Soft and published by Sega for the Dreamcast video game console. The game is based on the prospect of advancing characters around a board game while playing mini-games in between turns, much in the same vein as Nintendo's Mario Party.

Sonic Shuffle is the first Sonic the Hedgehog game in the party genre. The game's story centers on Sonic and his friends as they attempt to restore a dream world by gathering the shards of a powerful object dubbed the Master Precioustone. Sonic Shuffle received mixed reviews upon its release.

The story begins when Sonic, Tails, Knuckles, and Amy find themselves in an umfamiliar place called Maginaryworld. They meet a small fairy, named Lumina, who asks them for help. She explains that Maginaryworld is the world of people's dreams, and that the source of power there is the Perfect Precioustone. A villain named Void has shattered the Perfect Precioustone into many pieces, resulting in chaos in every part of the world. Lumina Flowlight and the rest of Maginaryworld are counting on Sonic to restore it and bring Lumina back, who mysteriously disappeared along with the Perfect Precioustone.