QWOP is an insanely challenging and frustrating game in which you control the thighs (Q and W) and calves (O and P) of a runner. It may seem impossible at first, but you can simulate a normal running motion with enough practice. Your goal is to reach 100 meters.
Added: 20 Feb 2011 - Released: 12 Nov 2008 (Bennett Foddy - Foddy.net)