http://tasvideos.org/413M.html

Marble Madness is a 3D'ish game similar in its style to Snake Rattle 'n Roll. The objective in these two games is quite different, though. In this game, the player must roll a marble from point A to point B. This is of course not as easy as it sounds. And certainly not as easy as it looks in this movie.

This is a tool-assisted speedrun, made on an emulator, using frame-by-frame shooting, savestates, and rerecords to overcome reaction time and human error. As such, it is purely a form of entertainment, and is not designed to show skill.