Metal door from Super Metroid.

Metal Doors[1], also known as Gray Hatches[2], Inactive Doors[3], and Closed Doors[3], are locked doors that appear in the 2D Metroid games.

The Sealed Doors and indestructible Blast Shields of the Prime series are most likely the same as the Metal Doors, and they are similar in appearance and accessibility to powerless doors.


When Samus Aran enters a room, the door behind her may lock and other times, she will find an area with several Metal Doors already in place. Usually they will only deactivate, allowing Samus to open them, after she has completed a task. The task usually involves purging the area of enemy hostiles, killing a boss, or returning power to machinery, however, some Metal Doors will never open and serve as one way passages through an area.

In Metroid: Samus Returns, there are two variants of Metal Doors. One is similar to the Blast Shield locks from Prime, where a normal door has a visible red lock that is automatically removed once a boss is defeated. The second variant appears as a metallic door without any of the normal lights seen on Beam Doors. Some of these are permanent locks, forcing Samus to find an alternate exit out of a room. Others are simply broken down from old age and, when opened from the other side, will malfunction and stay permanently open.

Special Hatch[]

Special Hatches in the Navigation Room

A similar door is found in Metroid Fusion, called Special Hatches within the game's manual. They are usually triggered when Samus enters a Navigation Room; in these cases, they are intended to keep her from leaving until she speaks to her computerized CO. Near the end of the game, the computer confines Samus in a Navigation Room using Special Hatches; only releasing her when she unintentionally calls it Adam, awakening Adam Malkovich's personality. These hatches will glow purple instead of gray when they are reactivated.

Official data[]

Super Metroid manual[]

"Metal Doors can only be opened when they are flashing. You can make Metal Doors flash by defeating certain enemies."

Metroid Fusion manual[]

"These can only be opened by fulfilling certain conditions."

Metroid Zero Mission manual[]

Gray Hatches
"Meeting certain requirements is the only way to open these hatches."

Metroid: Samus Returns Official Guide[]

DOORS (pg. 25)
"The technology filling the interior of SR388 is often seen aged and breaking, and the doors are no exception. Despite what the name suggests, inactive doors are active, but not fully. You usually find them disabled and locked on one side, but completely functional on the other. On the whole, opening one of these doors causes a malfunction, which forces the door open permanently, though some require you to enter and exit from the same side every time."

See also[]


  1. ^ Super Metroid manual, pg. 26
  2. ^ Metroid: Zero Mission manual, pg. 29
  3. ^ a b Metroid: Samus Returns map key