Micro Pac-Man

Developed by Japanese design expert Kotoro Tanaka, the microscopic Pac-Man uses a tiny video projector, combined with the original Pac-Man arcade hardware to allow play of the game through the optics of a microscope.The micro rig reflects its image through a mirror to produce a 1 centimeter square image at a resolution of 1439-ppi.

http://collisions.doppac.cc/archives/404

[via gamescenes]