Blue Door

:This article is about the doors that can be opened with any weapon. For other uses, see Blue Door (Disambiguation).
Blue Doors, also known as Blue HatchesMetroid: Zero Mission manualMetroid Prime 2: Echoes manual, pg. 16, blue gatesClassic NES Series: Metroid manual, pg. 16, Power Beam DoorsMetroid Prime 3: Corruption Map Key and Metroid Dread, and Beam DoorsMetroid: Samus Returns Official Guide pg. 25, are doors that can be opened by any weapon. They are found in every Metroid game except Metroid II: Return of Samus, Metroid Fusion (replaced by Gray Hatches), and Metroid: Other M (replaced by automatically opening doors).
==Description==
The blue color is actually the color of a force field covering the door. After shooting a blue-colored door, the energy covering it will disrupt and peel off or dissipate, depending on the model. The main purpose of the energy covering the blue doors is to avoid accidental/unintentional entries to rooms by wild creatures surrounding the area. This blocks off a large quantity of bioforms from access since most of them cannot manipulate weapons or simply do not have the means to produce an energy-based projectile.
In Metroid Prime 2: Echoes, the logic behind this design of door is explained by using the Scan Visor on a regular Blue Door. The extensive explanation is not given when scanning a black, white, or 'grey' door, instead, it only informs Samus of what types of weapons energy can interact with the field on those doors.
In Metroid Prime 3: Corruption, by scanning a Blue Door on Elysia (once inhabited by the Chozo), it is revealed that since the discovery of said planet, the Galactic Federation used the model of the Elysian blue door as a basis to all currently existing doors found throughout the galaxy on planets, ships, and stations under Federation control.
The Beam Doors in Metroid: Samus Returns and Metroid Dread are yellow-colored, but nonetheless retain the same function as Blue Doors. The map keys refer to them as Power Beam Doors.
==Official data==
===Super Metroid manual===
;BLUE DOORS
:"These doors can be opened by Beams or Bombs."
===Super Metroid Nintendo Player's Guide===
;DOORS AND GATES: A HOW TO
:"Blue doors and gates can be opened with a single shot or a blast from one Bomb."
===Super Metroid GamePro Strategy Guide===
;Blue Gates
:"The regular weapon opens a Blue Gate."
===Metroid: Zero Mission manual===
;Blue Hatches
:"These hatches can be opened with any of Samus' weapons."
===Metroid Prime 2: Echoes temporary scan===
"Scan complete. This is a powered door system. Low-level energy shield on door to prevent activation by local creatures. Weapon fire of any type will disrupt the shield and open the door."
===Metroid Prime 3: Corruption Logbook entries===
===Metroid: Samus Returns Official Guide===
;INHABITANTS & ECO SYSTEM OF SR388 - DOORS (pg. 25)
:BEAM DOOR
:"This is the simplest and most common door you see on your journey. Simply use the Power Beam to shoot one of these doors, and it opens automatically."
===Metroid Dread Report Volume 9===
"These yellow doors open when hit with a Beam attack."
==Trivia==
*In Metroid Prime, there appears to be an unused Scan Visor panel of a Blue Door that heavily resembles the Super Metroid sprites. Doors are unscannable in Prime, except for the doors on the Frigate Orpheon when Samus first enters it, with the scan saying which room the door leads to.
*In Super Metroid, even though Blue Doors can be opened with any weapon, they do not open with Power Bombs. However, in the game's internal files, it appears there is a function that allows Blue Doors to be opened with Power Bombs, as this is seen when using SMILE, the game's level editor.
**In Metroid Prime, Blue Doors repelled Missiles, unless there was previously a Missile Door Lock covering it. An exception are two Doors located on the Orpheon, which can be opened with a Missile at any time. This was rectified in the Wii versions.
*Although the map keys of Corruption and Dread call Blue Doors "Power Beam Doors", they can be opened with any weapon in these games.
*The doors on Elysia and Tallon IV bear a striking resemblance to each other, likely because both areas were first colonized by the Chozo. The doors in Metroid Prime Hunters: First Hunt also resemble Tallon IV doors, but this is because First Hunt is set in a training hologram loosely based on Metroid Prime.
==Gallery==
blue Door.jpg|A Blue Door from Super Metroid.
Samus at lava's ledge.png|Super Metroid concept art.
Blue Door Zero.jpg|A Blue Door from Metroid: Zero Mission.
Obstacle bluedoor.jpg|A Tallon IV Blue Door.
Obstacle bluedoor2.jpg|An Aetherian Blue Hatch.
Obstacle bluedoor3.jpg|A Galactic Federation Blue Door.
Bryyo Blue Door.png|A Bryyo Blue Door.
Elysia_Blue_Door.jpg|A SkyTown Blue Door.
Pirate Blue Door.jpg|A Space Pirate Blue Door.
Samus Blue Door Remastered.png|A Blue Door from Metroid Prime Remastered.
==References==
Category:Doors
Category:Zebes
Category:Frigate Orpheon
Category:Tallon IV
Category:Celestial Archives
Category:Alinos
Category:Arcterra
Category:Vesper Defense Outpost
Category:Oubliette
Category:Aether
Category:Dark Aether
Category:GFS Olympus
Category:Norion
Category:Bryyo
Category:Elysia
Category:Pirate Homeworld
Category:GFS Valhalla
Category:Phaaze
Category:SR388
Category:ZDR
Category:Research
Category:Alimbic Technology