SEGA's Crazy Trick to Create Sonic 2's Special Stage - CODING SECRETS

I reveal SEGA's CODING SECRETS for Sonic the Hedgehog 2's Special Stage.

Is That You or Are You You by Chris Zabriskie is licensed under a Creative Commons Attribution license (creativecommons.org/licenses/...)
Source: chriszabriskie.com/reappear/
Artist: chriszabriskie.com/