As described in Missing Page #11, every piece of code used in the Library2 Game has a physical counterpart within the game itself. The fragile state of this code-sourcing creates a high probability of the game Black-holing, as Mynt's third iteration, Vanylla, did.

As such, it took Septrica many years to locate the Admin Passcode. As such, the concept of the Passcode itself was disabled, to prevent mass shenanigans.

Spoilers - Admin Code
Password: staystrongmynt