Martin designed the Arduino controlled mechanical Donkey Kong game. The game area is laser cut, while Mario is mounted on a metal rod, which is controlled via two servos, allowing it to move around and jump. Controls are read by the Arduino through a NES controller.
Via Hacked Gadgets
I love this kind of stuff. Here’s another one, totally mechanical, that you may not have seen before:
Giant Digi-Comp II Recreates Mechanical Computer from 1960s
http://laughingsquid.com/giant-digi-comp-ii-recreates-mechanical-computer-from-1960s/
Maker Faire NY 2011 and the Digi-Comp II
http://www.evilmadscientist.com/2011/maker-faire-ny-2011-and-the-digi-comp-ii/