How did this SEGA Genesis Game achieve the "Impossible"?

I explain how "The Adventures of Batman & Robin" had possibly the most coding tricks of any 16-bit game.

AL82 - kkbigal

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