GB Ninja Spirit in 05:40.42 by Primo

http://tasvideos.org/729M.html

This game is one of many ports of an arcade game (there is also a movie of a different version of the game here). In it, an evil force has corrupted all ninjas except for you, and you must defeat the evil force. You have four different weapons, and you can also obtain shadow clones which work similarly to the options from Gradius or the clones from Ninja Gaiden 2.

Sit back and enjoy the fast-paced ninja action and the weapon variety.

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.