Hacking Pong into a glitched Super Mario Game

Speedrunner Masterjun hat über einen TAS (Tool Assisted Speedrun) ein laufendes Supermario-Game so geglitcht, dass er eigenen Code innerhalb der Game Engine laufen lassen konnte und hat so über die Controller-Anschlüsse zwei eigene Games – Pong und Snake – eingeschleust, inklusive Auswahl- und eigenem End-Screen, im Video oben ab Minute 1:40.

I manipulate where the moving objects (sprites) are located or where they despawn, then I swap the item in Yoshi's mouth with a flying ?-block (thus the yellow glitched shell) and using a glitch (stunning) to spawn a sprite which isn't used by SMW and since it tries to jump to the sprite routine location, it indexes everything wrong and jumps to a place I manipulated earlier with the sprites (OAM) and because of the P-Switch it jumps to controller registers and from there the arbitrary code execution is started.

Even shorter: Magic.

Hack-A-Day: Teaching Mario to Play Pong and Snake Through Innumerable Exploits
TAS-Videos: Submission #4156: Masterjun's SNES Super Mario World "Executes Arbitrary Code" in 02:25.19