R2

The only lost level in Sonic CD, this level brings up many speculations as to what it might have been. Some say the Desert level was to have been here, when it was taken out of Sonic 2, while others think it was the ruins level seen in an uncut pencil sketch. Although many topics have been started about this, most have led to arguments and usually only end up in frustration. All that is known about R2 is that it was originally the second stage, between Palmtree Panic and Collision Chaos.