Sammy Lightfoot is a platforming game that was originally developed for the Apple II and later ported to the Commodore 64 and ColecoVision. Here, you play as circus acrobat Sammy Lightfoot as he jumps across perilous obstacles in service of the audience. He also appears to be a pretty frail acrobat as he can't fall from too high or be hit by objects such as big balls lest he dies.
DrD2k9 in this run plays through the game as fast as possible until the difficulty stops increasing, which takes eight levels with three stages each to do so.