An NES cake, of course.

Over the years we've seen people play Super Mario Bros. in some crazy ways: you can play Mario with Kinect, play Mario with your eyes and even, believe it or not, play Mario with your hands, like a baby's toy. They've all required some sort of human interaction, but not this latest Mario-related chicanery, which uses a robot to replace the fleshbags in charge of the controller.

Granted, it's not a mechanical robot, as the video shows just a flashing LED on a circuitboard rather than the giant steel contraption we'd create to play Mario perfectly, but as a tool-assisted speedrun running on the original hardware, this is still pretty cool, and shows off some Mario glitches you may not have known about.

[source instructables.com]