Rhythm Thief & the Emperor's Treasure (USA) (Japanese: リズム天国と踊る太鼓の達人, Rizumu Tengoku to Odoru Taiko no Tatsujin) is a music-based rhythm game developed and published by Sega for the Nintendo 3DS. The game follows the adventures of a young thief named Raphael and his dog Fondue as they search for the mysterious Emperor's Treasure. The game features over 50 rhythm-based mini-games, a variety of musical genres, and a story mode that follows Raphael's adventures as he unravels the mystery of the Emperor's Treasure. Players must use their stylus and the 3DS' touch screen to complete the various rhythm challenges, which range from tapping, sliding, and tracing to keeping a beat and playing musical instruments. Players can also use the 3DS' microphone and camera to create their own musical compositions. With its catchy music and engaging story, Rhythm Thief & the Emperor's Treasure is a fun and unique rhythm game that is sure to please fans of the genre.