View source for Key Door

{{item infobox
|image=[[File:SMM-NSMBU-Locked-Door.png]]<br>A ''[[New Super Mario Bros. U]]''-styled Key Door from ''[[Super Mario Maker]]''
|first_appearance=''[[Yume Kōjō: Doki Doki Panic]]'' ([[List of games by date#1987|1987]], overall)<br>''[[Super Mario Bros. 2]]'' ([[List of games by date#1988|1988]], ''Super Mario'' franchise)
|latest_appearance=''[[Super Mario Bros. Wonder]]'' ([[List of games by date#2023|2023]])
}}
'''Key Doors''', also known as '''Locked Doors''' (or '''locked doors'''), are doors in [[Super Mario (franchise)|''Super Mario'']] platformers that the player cannot enter unless they have collected a [[key]]. Key Doors usually have the appearance of a regular [[Warp Door]] with a keyhole.

==History==
===''Super Mario'' series===
====''Super Mario Bros. 2''====
{{multiframe
|[[File:SMB2 Key Door.png]] [[File:SMAS SMB2 Key Door.png]] [[File:SMA Key Door.png]]
|align=left
}}
Key Doors make their debut in ''[[Super Mario Bros. 2]]'', first appearing in [[World 1-2 (Super Mario Bros. 2)|World 1-2]]. They can be opened only by keys. If the player picks up a key for a Key Door, a [[Phanto]] will chase the player. Once a Key Door is unlocked, it disappears, though in remakes, only the keyhole disappears by transforming them into normal swing-open Warp Doors.
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====''Super Mario 64'' / ''Super Mario 64 DS''====
[[File:SM64 Key Door.png|thumb|150px|A Key Door in ''Super Mario 64'']]
Keys in ''[[Super Mario 64]]'' are used to open Key Doors that lead to new courses and, in the [[Super Mario 64 DS|DS remake]], Key Doors that hold [[Mario]], [[Luigi]], [[Wario]], and a secret [[Power Star]].

====''Super Mario Advance 4: Super Mario Bros. 3''====
[[File:SMA4 Key Door.png|frame|left]]
While Key Doors do not appear in ''[[Super Mario Bros. 3]]'', one can be found in the [[Game Boy Advance]] remake ''[[Super Mario Advance 4: Super Mario Bros. 3]]'', in the [[World-e]]-exclusive level [[Doors o' Plenty]].
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====''Super Mario Galaxy''====
[[File:SMG Key Door.png|thumb|left|100px]]
Key Doors appear in the [[Ghostly Galaxy]] in ''[[Super Mario Galaxy]]'', where they automatically open as soon as Mario or Luigi obtains a key. In the case of the mission [[Matter Splatter Mansion]], multiple Key Doors can be unlocked at once with one key.
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====''Super Mario Maker'' series====
Key Doors were introduced in ''[[Super Mario Maker]]'' in the version 1.40 update, and available at the start in ''[[Super Mario Maker for Nintendo 3DS]]''. They can be produced by shaking a [[Warp Door]] again after being shaken into a [[P Warp Door]]. They also appear in ''[[Super Mario Maker 2]]'', with the same function as in the previous game. As of version 3.0.0 of ''Super Mario Maker 2'', [[Cursed Key]]s can also be used to unlock Key Doors.

====''Super Mario Run''====
[[File:SMRlockeddoor.png|10px|right|frame]] 
Key Doors appear in ''[[Super Mario Run]]'' in the level [[Boohind Lock and Key]], where they can be opened only with keys. Once entered, Key Doors cannot be entered again. Key Doors resemble [[Ghost House]] doors from ''[[New Super Mario Bros. U]]'' but with keyholes in the center.

====''Super Mario Bros. Wonder''====
Key Doors return in ''[[Super Mario Bros. Wonder]]'', where only two 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 doorframe and the emblem on the door. They behave the same as in the ''Super Mario Maker'' games.

===''Yoshi's Story''===
[[File:Story Door locked.png|frame|left]]
In ''[[Yoshi's Story]]'', locked doors are found in the [[Lift Castle]], [[Ghost Castle]], and [[Magma Castle]].
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===''Mario vs. Donkey Kong''===
{{multiple image
|align=right
|footer=A regular door (left) and a chained door in multiplayer (right) in the Switch remake of ''[[Mario vs. Donkey Kong (Nintendo Switch)|Mario vs. Donkey Kong]]''
|image1=MarioVsDKSwitch Door.png
|width1=80
|image2=MarioVsDKSwitch ChainedDoor.png
|width2=100
}} 
In ''[[Mario vs. Donkey Kong]]'' and its [[Nintendo Switch]] [[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 preceding 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. 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 unlock the door before the main key can be used on it.

Doors are succeeded by similarly functioning [[Goal Door (Mario vs. Donkey Kong series)|Goal Door]]s throughout the ''[[Mario vs. Donkey Kong (series)|Mario vs. Donkey Kong]]'' series, however most appearances do not always require the use of a key to go through them.
<gallery>
MarioVsDK_Door.png|Sprite of a door in ''[[Mario vs. Donkey Kong]]''
MVDK_1-1_1.png|Screenshot of a door in ''Mario vs. Donkey Kong''
KEY DOOR MVDK.PNG|Credits artwork of a door in ''Mario vs. Donkey Kong''
MarioVsDKSwitchMultiplayer3.jpg|A chained door in a multiplayer session in the Nintendo Switch remake of ''[[Mario vs. Donkey Kong (Nintendo Switch)|Mario vs. Donkey Kong]]''
</gallery>
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===''Captain Toad: Treasure Tracker''===
Key Doors appear again in ''[[Captain Toad: Treasure Tracker]]'', behaving like in previous ''[[Super Mario (franchise)|Super Mario]]'' games.

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

==Gallery==
<gallery>
SMG Asset Model Key Door.png|''[[Super Mario Galaxy]]''
SMM-SMB-Locked-Door.png|''[[Super Mario Maker]]'' (''[[Super Mario Bros.]]'' style) (locked)
SMM-SMB-Unlocked-Door.png|''Super Mario Maker'' (''Super Mario Bros.'' style) (unlocked)
SMM-SMB3-Locked-Door.png|''Super Mario Maker'' (''[[Super Mario Bros. 3]]'' style) (locked)
SMM-SMB3-Unlocked-Door.png|''Super Mario Maker'' (''Super Mario Bros. 3'' style) (unlocked)
SMM-SMW-Locked-Door.png|''Super Mario Maker'' (''[[Super Mario World]]'' style) (locked)
SMM-SMW-Unlocked-Door.png|''Super Mario Maker'' (''Super Mario World'' style) (unlocked)
SMM-NSMBU-Locked-Door.png|''Super Mario Maker'' (''[[New Super Mario Bros. U]]'' style) (locked)
SMM-NSMBU-Unlocked-Door.png|''Super Mario Maker'' (''New Super Mario Bros. U'' style) (unlocked)
SMM2-SM3DW-Locked-Door.png|''[[Super Mario Maker 2]]'' (''[[Super Mario 3D World]]'' style) (locked)
SMM2-SM3DW-Unlocked-Door.png|''Super Mario Maker 2'' (''Super Mario 3D World'' style) (unlocked)
</gallery>

==Additional names==
===Internal names===
{{internal names
|game1=''[[Super Mario Galaxy]]''
|file1=<tt>ObjectData/DarknessRoomDoorA.arc</tt>
|name1=DarknessRoomDoorA
|meaning1=Darkness Room Door A
|game2=''Super Mario Galaxy''
|file2=<tt>StageData/ObjNameTable.arc/ObjNameTable.tbl</tt>
|name2=暗闇部屋の扉Ａ (''Kurayami Heya no Tobira A'')
|meaning2=Darkness Room Door A
|game3=''[[Captain Toad: Treasure Tracker]]''
|file3=<tt>content/ObjectData/DoorKey.szs</tt>
|name3=DoorKey
|meaning3=Door Key
}}

===Names in other languages===
{{foreign names
|Jap=カギドア
|JapR=Kagi Doa
|JapM=Key Door
|ChiS=上锁门
|ChiSR=Shàngsuǒ Mén
|ChiSM=Locked Door
|ChiT=上鎖門
|ChiTR=Shàngsuǒ Mén
|ChiTM=Locked Door
|Dut=Gesloten deur<ref>{{cite|language=nl| author = Nintendo Nederland | date = March 9, 2016 | url = www.youtube.com/watch?v=xV4Hwg2Y_JA | title = Super Mario Maker - Gesloten deuren! Spijkerzuilen! Roze munten! (Wii U) | publisher = YouTube | accessdate = May 19, 2019}}</ref>
|DutM=Closed door
|Fre=Porte verrouillée
|FreM=Locked Door
|Ger=Schlüsseltür
|GerM=Key door
|Ita=Porta chiusa<ref>{{cite| title = ''Super Mario Bros. 2'' Italian manual | page = 17|publisher=Nintendo of Europe|author=Nintendo|language=it }}</ref><ref>{{cite| title = ''[[Super Mario All-Stars]]'' Italian manual | page = 20 |language=it|publisher=Nintendo of Europe|date=2010}}</ref>
|ItaM=Locked/Closed door
|Ita2=Porta con serratura<ref>{{cite|date=November 15, 2018|title=''[[Super Mario Bros. Encyclopedia|Super Mario Bros. Enciclopedia]]''|publisher=Magazzini Salani|language=it|isbn=889367436X|page=70}}</ref>
|Ita2M=Door with keyhole
|Ita3=Porta chiusa a chiave
|Ita3M=Locked door
|PorE=Porta fechada à chave<ref>{{cite|language=pt-pt| author = Nintendo Portugal | date = March 9, 2016 | url = www.youtube.com/watch?v=GGuRmZol4sA | title = Super Mario Maker - Portas fechadas à chave! Postes com espinhos! Moedas rosa! (Wii U) | publisher = YouTube | accessdate = January 11, 2021 }}</ref>
|PorEM=Locked door
|Rus=Запертая дверь
|RusR=Zapertaya dver'
|RusM=Closed door
|SpaA=Puerta cerrada con llave
|SpaAM=Locked door
}}

==See also==
*[[Cage]]
*[[Warp Box (With Key)]]

==References==
<references/>

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[[Category:Doors]]
[[Category:Captain Toad: Treasure Tracker objects]]
[[Category:Super Mario 64 objects]]
[[Category:Super Mario 64 DS objects]]
[[Category:Super Mario Advance objects]]
[[Category:Super Mario Advance 4: Super Mario Bros. 3 objects]]
[[Category:Super Mario Bros. 2 objects]]
[[Category:Super Mario Bros. Wonder objects]]
[[Category:Super Mario Galaxy objects]]
[[Category:Super Mario Galaxy 2 objects]]
[[Category:Super Mario Maker objects]]
[[Category:Super Mario Maker 2 objects]]
[[Category:Super Mario Run objects]]
[[it:Porta chiusa a chiave]]