Celebrate two decades of the Blue Blur in Sonic Generations for the Nintendo 3DS. This unique handheld version of the anniversary title sees Classic Sonic and Modern Sonic teaming up to stop a mysterious new threat that is erasing time. Experience levels inspired by iconic Sonic stages from different eras, each reimagined with distinct 2D side-scrolling gameplay for Classic Sonic and fast-paced 3D action for Modern Sonic, all enhanced with stereoscopic 3D visuals. Unlock special missions and race against rivals in this portable tribute to Sonic's rich history.