Arbitrary code execution on SMW

This guy found an exploit on the game Super Mario World for the SNES that allowed him to run code on memory. Giving certain input for the game he manages to program the pong & snake games inside super mario world and then play them.

Video: http://www.youtube.com/watch?v=OPcV9uIY5i4
Article: http://arstechnica.com/gaming/2014/01/how-an-emulator-fueled-robot-reprogrammed-super-mario-world-on-the-fly/

I thought it was damn impressive!

>>8
I'm not surprised. It would be nice to know some human-reproducible arbitrary code execution hacks so I could use a gameboy as a lisp calculator.