Editing Key Door

|image=[[File:Door CTTT.png|200x200px]]<br>Artwork from ''[[Captain Toad: Treasure Tracker]]''

|latest_appearance=''[[Nintendo World Championships: NES Edition]]'' ([[List of games by date#2024|2024]])

'''Key Doors''', also known as '''Locked Doors''' (or '''locked doors'''), appear in the [[Super Mario (franchise)|''Super Mario'' franchise]] as objects with the appearance of a regular [[Warp Door]] with a keyhole, and they cannot be entered without a [[key]].

Key Doors are objects in ''[[Yume Kōjō: Doki Doki Panic]]'' and ''[[Super Mario Bros. 2]]''. They are first encountered in [[World 1-2 (Super Mario Bros. 2)|World 1-2]]. If the player character picks up a key for a Key Door, a [[Phanto]] will chase them. Once a Key Door is unlocked, it disappears, though in remakes, only the keyhole disappears by transforming them into normal swing-open Warp Doors.

Key Doors in ''[[Super Mario 64]]'' and ''[[Super Mario 64 DS]]'' are used to open certain doors to new courses. In the remake only, there are also Key Doors that hold [[Mario]], [[Luigi]], [[Wario]], and a secret [[Power Star]] in the [[Peach's Room|princess's room]].

Key Doors are objects in ''[[Super Mario Maker]]'' as of the version 1.40 update and in the base game of ''[[Super Mario Maker for Nintendo 3DS]]''. They can be produced by shaking a [[Warp Door]] again after being shaken into a [[P Warp Door]]. Key Doors are also objects in ''[[Super Mario Maker 2]]'', with the same role, though as of version 3.0.0 of ''Super Mario Maker 2'', [[Cursed Key]]s can also be used to unlock Key Doors.

Key Doors appear in ''[[Super Mario Run]]'' in the course [[Boohind Lock and Key]]. They can be opened only by using the key found in their room. If the player approaches a Key Door without a key, then the door wobbles in place. Once the player has the key, they act identically to Warp Doors. Key Doors resemble [[Ghost House]] doors from ''[[New Super Mario Bros. U]]'' but with keyholes in the center.

Key Doors are objects in ''[[Super Mario Bros. Wonder]]''. They are based on their appearance in the ''Super Mario Maker'' subseries. Only two Key Doors appear in [[Color-Switch Dungeon]]: one requiring a red heart-shaped key, then another later on requiring a blue spade-shaped key, each indicated by the shape of the door frame and the emblem on the door.

In ''[[Mario vs. Donkey Kong]]'' and its [[Mario vs. Donkey Kong (Nintendo Switch)|remake]], locked doors appear in all levels excluding the [[Mini-Mario]] levels and boss battles, and are designated with a giant keyhole on them. In the original game, they were referred to generically as '''doors'''<ref>{{cite|title=''Mario vs. Donkey Kong'' North American Virtual Console digital manual|page=9}}</ref>. The player (or [[Key Mini Mario]] in the Plus levels) must carry a [[Key]] towards the door to reach the next area of the level. In all Plus and [[Expert (world)|Expert]] levels, doors act as the goal instead, with no new areas beyond it.

In the remake, doors are redesigned, with an additional red frame featuring a gold star symbol on top. Doors continue to retain their usual purpose, but the music does not stop and no victory fanfare is played when a player enters one, except in Plus and Expert levels. In multiplayer sessions, a player who is not close to the door at the time of its unlocking will be instantly warped inside of it with similar mechanics to ''[[Super Mario 3D World]]''. Additionally, the door will be chained with a silver lock, bearing a resemblance to locked doors in ''[[Mario vs. Donkey Kong: Mini-Land Mayhem!]]''. This requires obtaining a silver [[flying key]] in the level to unchain the door before the main key can be used on it.

In the Super Mario Mash-Up Pack in ''[[Minecraft]]'', there is a painting of Key Doors from ''Super Mario 64''.

==Naming==

|Jpn=カギドア

|JpnR=Kagi Doa

|JpnM=Key Door

|Ita=Porta chiusa<ref>{{cite| title = ''Super Mario Bros. 2'' Italian manual | page = 17|publisher=Nintendo of Europe|language=it }}</ref><ref>{{cite| title = ''[[Super Mario All-Stars]]'' Italian manual | page = 20 |language=it|publisher=Nintendo of Europe|date=2010}}</ref>

{{DKGB}}