Unlike the other locks in the game, this lock is supposed to be circle shaped. This explains the strange shape of the Special Key that goes with it, too. Also, once the Special Key is used on the Special Lock 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 a dodecahedron (a twelve-sided shape) if it was 2-dimensional, instead of a circle. This is because it either isn't possible to make a curve in Unity or Dvloper hasn't figured it out yet.
- Strange enough, when the Player inserts the Special Key to open the room, it creates a large amount of noise but it doesn't alert Granny.