Time Stop (タイムストップ Taimusutoppu?) is one of Sonic the Hedgehog's special attacks in Sonic Adventure 2 and Sonic Adventure 2: Battle. When performing this technique, Sonic temporarily freezes his opponent in time. It is the equivalent of Shadow the Hedgehog's Chaos Control.
When performing Time Stop, Sonic raises his right fist and calls out the move's name, while using some sort of mysterious power that briefly turns all colors on the screen to negative (being restricted to only the opponent's screen after the move is activated), and a counter counting down from ten will appear. This effect leaves the opponent completely immobilized, making it an ideal way for the user to gain the upper hand in a race. Time Stop lasts for ten seconds, which is indicated by the counter, although the opposing player can reduce the remaining amount of time by rapidly pressing buttons.
Time Stop can only be performed in the games' two-player mode when playing as Sonic. To use it, the player must press // on the ground after collecting sixty Rings. To use it again, the player has to collect another sixty Rings.