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The Pyrosphere door glitch, also known as the Sector 3 door glitch or Locked Door in Sector 3, is a potentially disastrous bug in Metroid: Other M involving a locked door found in the basement of the Desert Refinery, which completely halts progress, leaving the player unable to continue without starting over or using an old game save taken before the bug occurred. Consequently, copying the save files to the other does not solve the issue. Nintendo later acknowledged the glitch and revealed its cause. If the player encounters this glitch but do not wish to start over, a fixed, non-glitched save file of this door for the US version is available for download.
In the room after a large area where Samus was chased by the Vorash, she must battle a group of Zebesians and Novas before receiving authorization to use the Ice Beam from Adam. After that, Samus will reach a long corridor which locks her inside. To unlock the doors, Samus must defeat a group of Dessgeegas. Once all Dessgeegas are defeated, the doors will be unlocked.
Should the player, for any reason, backtrack at this point to the room where Samus first used the Ice Beam, the door in the basement of the Desert Refinery will remain locked permanently, and the player will not be able to continue on further in the game. The door is located at the basement exit after the three Grapple Points.
To avoid the glitch, the player must exit the room via a newly unlocked door near a tall cliff down at the end of the corridor, and proceed as normal before doing any backtracking to any previous rooms.
The Japanese strategy guide for Other M includes an editor's note warning readers about the glitch, and explains the location, cause and how to avoid locking the door. The letter translates as follows:
METROID Other M
Note Regarding Inability to Progress To Sector 3
--- Symptoms ---
The door to progress to the next room is still locked red, and you cannot go back nor move forward.
--- Location ---
In the highest floor in the Desert Refinery, after defeating the boss, and across from the three grappling
hooks in front of the elevator exit of the ground floor, there is a door on the other side.
--- Cause ---
At the beginning of the game, after acquiring the Ice Beam, there are two rooms ahead which contain
enemies that have two spikes. After eliminating them, if you do not proceed to the door just ahead (in the center of the screen) and instead attempt to return (behind the screen) back to Sector 2 (to the
room where the Ice Beam was acquired) then try to progress forward again, the above mentioned problem will arise.
--- How to Avoid the Problem ---
After acquiring the Ice Beam, do not attempt to head back to Sector 2 once you have killed the two-
spiked monsters, and simply progress toward the next door (in the center of the screen).
- ^ Jim Reilly (2010-09-16). No Fix in Sight For Metroid Bug. IGN. Retrieved on 2010-09-18.
- ^ a b c d Nintendo of America. Metroid Other M - Locked Door In Sector 3. Nintendo of America. Retrieved on 2014-07-21.
- ^ 『METROID Other M』セクター3で先に進めなくなる症状についてのお知らせ (Japanese). Nintendo. Retrieved on 2011-06-16.
- ^ Nintendo Taking Care Of Metroid: Other M Bug. Kotaku. Retrieved on 2010-09-27.
- ^ Nintendo Exterminating Metroid Bug. IGN (2010-09-27). Retrieved on 2010-10-23.
- ^ Translated by Leah Hicks: https://twitter.com/loohhoo/status/892133681120325633
|Sequence Breaking||101% glitch • Arm pumping • Block Shifting Glitch • Door Jump • Early Ice Beam • Early Super Missiles • Ghetto Jump • Infinite Speed • Mockball • Roll Jump • Zebetite Glitch|
|Weapons||Chainsaw Beam • Murder Beam • Rapid Fire Missiles • Shadow Freezing|
|Easy Upgrades||Golden Torizo code • Spacetime Beam|
|Game-Ending||Pyrosphere door glitch • Artifact of Warrior • Main Research • Mine Lift|
|Miscellaneous||Blue Suit glitch • Secret World • Name glitch • Visor cutscene glitch|