Knuckles Chaotix

Song control:

Press X or Y at the sound test screen to toggle stereo mode and adjust the speed of the music.

Fast chaos rings:

Start a new game and use the "Manual Save" feature. Play the special stage of the level and exit the at the world entrance after winning. Reset the Genesis if you lose the special stage. Your loss will not register, allowing all five chaos rings to be collected after only five levels.