Comment by gregsadetsky

Agreed, I was first perplexed at what was going on, starting to not see where it was going at all with the low-level explanations, and then when the enemy positions turned out to be assembly instructions... mind blown.

It also reminded me of this video which shows Flappy Bird being code injected into Super Mario World, by hand... https://www.youtube.com/watch?v=hB6eY73sLV0