One of Super Mario 64’s few remaining mysteries has been solved, thanks to a player who figured out how to open a previously “unopenable” door from the 1996 Nintendo 64 classic. We can thank a nearly four-hour YouTube video that exhaustively detailed how invisible walls work in Super Mario 64, and the tenacity of the game’s community for the new discovery.
Source: Super Mario 64’s secret ‘unopenable’ door has finally been opened – Polygon