Key



Keys are used to open designated locked doors. There are two types of key; futuristic keycards, and "skull keys", which resemble glowing monochrome skulls. If the player encounters a locked door and attempts to open it without the correct key, the door will not open and the player will get a message saying so. Once a key is obtained, any locked door of corresponding color on the map can be opened. Keys are lost upon map exit.

Multiple keys of a given color may be picked up in the same level; the status bar will display whichever type was last taken. Doors in Doom are affected identically by keycards and skull keys. Boom, however, introduced door types that require the key to be of the right type and not just the right color; such doors are supported in most source ports.

Stats for IWADs
Blue keycard Red keycard Yellow keycard

Blue skull key Red skull key Yellow skull key