One of the possible 54 doors which to be pulled from the Blind Mystery Deck.

Sliding Grid Door - Wooden sliding door of perhaps a classroom.

One of the possible 54 doors which to be pulled from the Blind Mystery Deck.

Iron Pillar Door - Grey door with an extra metal bar door, for extra protection of a HDB flat.

One of the possible 54 doors which to be pulled from the Blind Mystery Deck.

Cantonese Iron Door - Dark Green and Green iron door of a Cantonese home.

One of the possible 54 doors which to be pulled from the Blind Mystery Deck.

Operating Room Door - Red door of an operating room of a hospital.