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' ...

In order to unlock Sonic the Hedgehog himself, newcomers to Sonic Speed Simulator will need to adjust to a rather slow speed at the start of the game. As they make their way through the Green Hill ...