At first, it seems impossible to imagine that a totally blind player could make their way through the complicated dungeons and wide Hylian expanses of the N64 classic The Legend of Zelda: Ocarina of Time. Yet as you watch Terry "MegaTgarrett" Garrett descend Ganondorf's tower and defeat the evil king using nothing but save states, surround sound speakers, and years of research, you'll begin to wonder if "impossible" even has room in your vocabulary anymore. There have been "blindfolded" runs of the game completed in the past, but obviously those players had a SLIGHT advantage. 


As you watch him finish the game you begin to see the fascinating logic and reasoning behind his play: 


Here's MegaTgarrett's first video from the playthrough, recorded way back in 2011. It gives you  a better look at his setup.