Sonic Generations

Sonic's birthday celebration turns into a chaotic adventure when a mysterious creature appears and pulls him and his friends into interdimensional portals. Sonic finds himself at the crossroads of time alongside a younger version of himself, with whom he must work together to restore his history, save his friends, and fix the flow of time.

Act 1 stages are played using classic Sonic, who has limited abilities, while Act 2 stages feature Modern Sonic, who gains a homing attack and increased speed. Both Sonics can earn new abilities and switch between 2D and 3D platform sections. Completing stages unlocks challenge stages, collectible Red Star Rings, and access to original music and concept art.