Sonic Speed Simulator has you embody characters from Sonic the Hedgehog and explore massive Zones where leveling up makes you faster. Its playable character roster includes Amy Rose as well, the main ...

Knuckles can be unlocked in the same exact fashion that many players had unlocked Miles "Tails" Prower with in the stage before. In the next level, Emerald Hill Zone, players can find Knuckles' ...