Eternal Fortress

The Eternal Fortress, also known as the Eternal Fort, is a rumored level that can supposedly be found in Super Mario 64. Whenever it is found, the reports vary drastically. However, reporters do not give much information on the level. It is unclear if the Eternal Fort has a cognitohazard that prevents most information about the level being spread or if the level was simply traumatic. This level is only unlocked "by the worthy".

Information
There is very little information about this level, and every report appears to vary. Below are some consistent features of the level:


 * It is the ultimate, final level of Super Mario 64.
 * This video is the music for the Eternal Fortress. (Watching this video can have negative effects, according to the vague description.)
 * It either functions as a Bowser level or a course.
 * You must be "worthy" to find and complete this level. What this means is unclear, though some believe it means that the player must know everything about Super mario 64.
 * Nintendo appears to be trying to hide this level from the public due to unknown reasons.
 * The level is very difficult.
 * The level is a castle-like structure that has 4 towers stretching into the sky.
 * The level looks like an "opposite" of Princess Peach's Castle.

Theorizing
There are 2 main theories as to why the level was removed: The level was simply too difficult, or it is somehow tied to the Personalization A.I. It is also possible the Eternal Fortress is actually Bowser's Castle, as it does not appear anywhere in the main game. Bowser has had a castle in every main Super Mario Bros. game before Super Mario 64. A theory also states that the towers seen in the level are actually Tower of the Wing Cap. Some theorize that due to the Second Floor not having a Bowser level, Bowser in the Sky was intended to be on the Second Floor and the Eternal Fortress was to be the final Bowser level. Others state it was the Bowser level of the Fourth Floor before it was removed.

This level is often theorized to be connected to 2 other things: Unlocking Luigi, and the L Is Real 2401 statue, AKA the Eternal Star Statue. Some state that the level only appears to the worthy due to it unlocking Luigi. It is also tied to the Eternal Star Statue due to a similar name.