Note that this glitch requires the use of a NES controller that allows Left and ... there is a glitch in the game's programming which allows Link to move with much higher velocity than normal ...

along with a clean dumped image of Zelda II: The Adventure of Link. Dumping NES cartridges is easier than ever these days due to many cartridge dumper devices being plug-and-play over USB.

Nearly forty years later, this Zelda game somehow brings back fond memories and is hard to go back to at the same time.