Unlike the other locks in the game, the lock is kind of circular in shape. This explains the strange shape of the key that goes with it, too. Also, once the Special Key is used on the Special Room it is unable to be retrieved, as the door will go into the wall, unlike other doors.
- It's the only lock with four holes.
- It's the only lock without a square base shape.
- The lock itself is only "kinda" circular, as it would actually dodecahedron (a twelve-sided shape) if it was 2-dimensional.
- Strange enough, when the Player inserts the Special Key to open the room, it creates noise but it doesn't alert Granny.