Speed Up

Speed Up is one of Sonic the Hedgehog, Shadow the Hedgehog and Amy Rose's special moves in Sonic Adventure 2 and Sonic Adventure 2: Battle. When performing this technique, the user increases their speed. It can only be performed when playing as Sonic, Shadow or Amy in the games' two-player mode.

Description
When performing Speed Up, the user emits blue sparkles and becomes able to run at speed exceeding their maximum speed. In gameplay, Speed Up increases the running speed of the playable character for ten seconds, similar to High-speed Shoes.

Speed Up can only be performed in the games' two-player mode. To use it in gameplay, the player must press the Action Button after collecting a set amount of Rings. After using it, the player has to collect the same amount of Rings to use Speed Up again. For Sonic and Shadow, the player has to collect 20 Rings. For Amy however, the player only has to collect 10 Rings.