L Is Real 2401

L Is Real 2401 is the theory that Luigi could be unlocked in Super Mario 64. Many theories have appeared about how to unlock Luigi, and some might have appeared after the Personalization A.I. added Luigi into the game. However, there were files and code associated with Luigi found in the Nintendo 2020 Gigaleak. Below are some theories on how to unlock Luigi. The title L is real 2401 comes from an interpretation of what the Castle Courtyard star statue's plaque says.

Theories
There are several theories on how to unlock Luigi in Super Mario 64. These theories include:


 * Running around the L is real 2401 statue 2401 times.
 * Collecting 2401 coins.
 * Getting Behind The Portal.
 * Finding a secret 121st star.
 * Staying in the game for 2401 hours.
 * Finding a hidden level in Big Boo's Haunt and defeating a boss fight with King Boo, similarly to how you unlock Luigi in Super Mario 64 DS.
 * Unlocking the Ghoul Medal.
 * Reaching the area Behind The Waterfall.
 * Finding 5 hidden coins throughout the courses and bringing them to the Castle Courtyard.
 * Clearing the Eternal Fortress level.
 * Completing the Super Mario Challenge.
 * Finding a hidden Green Rabbit, similar to Luigi's Rabbits from Super Mario 64 DS.
 * Finding a hidden Luigi painting in Bowser's Domain.
 * Unlocking the Penguin's Gold Medal.
 * Jumping into a green pipe in Pleasant, Pleasant Falls.
 * Collecting all 7 stars in Green, Green Groves.
 * Doing a Stop N' Swop with another Nintendo 64 game, usually Paper Mario.
 * Unlocking a door in Big Boo's Haunt using a Big Boo's Key.
 * Getting behind the Dire, Dire Docks portal in the Castle Basement after it moves back.
 * Accessing Behind The Mirror.