More PSP fun ahoy! The chao have all gone missing and Doctor Eggman is behind this dastardly deed - except he isn't, as a returning Silver knows, it's that cold so and so Eggman Nega. He's preparing to unleash a frightening beast upon the world, which will lead to it's destruction.

Sonic & Tails are on the case, followed by Knuckles & Rouge while Espio teams up with Silver and Shadow is joined by a... helpful Metal Sonic. Has the world gone nuts???