Sector 3 / Pyrosphere (セクター3 ·パイロスフィア Sekutā 3 · Pairosufia?), is the extreme heated, lava-filled area of the BOTTLE SHIP. It mainly consists of caverns with rocky ground suspended over lava, with an experimental simulated desert area filled with sand deeper inside the sector. The organisms inhabiting this area are mostly from Zebes' Norfair, along with several previously un-recorded lava-inhabiting species.

Samus is authorized by Adam to use the Ice Beam, Varia Suit, Grapple Beam, Super Missiles and Plasma Beam here. Rooms in the area include the Floor Observation Room, Blast Furnace Observation, the Environmental Test Floor, the Desert Refinery and the Geothermal Power Plant.

Samus's arrivalEdit

Vorash attack lava lake Pyrosphere HD

Samus is chased by the Vorash in the Pyrosphere.

Samus makes her way to Sector 3 after orders from Adam to track the Mystery Creature that attacked her and the rest of his 07th Platoon at the Exam Centre in the Biosphere. Samus descends a shaft into the area, following a trail of green blood left by the wounded monster. Samus investigates the area, but is forced to run through an area exposed to the intense heat of the nearby volcano, causing her to take heavy damage. To make matters worse, she is attacked by a large lava-dwelling predator known as the Vorash that seems to have a taste for her flesh. She narrowly escapes the beast, and heads towards the volcano interior. Here she encounters a creature called Goyagma that is causing disruption to the local environment by manipulating the lava levels. Samus defeats it, but is ordered by Adam to investigate the Cryosphere due to a high-survivor probability after finding a dead-end.

After discovering a survivor in Sector 2, Samus returns to the Pyrosphere due to the monster she was orginally tracking enraging the wildlife in the ship. Samus is ordered to activate her Plasma Beam if she finds it. She manages to make her way deeper into the Pyrosphere, saving Anthony Higgs from a swarm of Novas and a Rhedogian that she was unable to finish in the Cryosphere. Anthony was ordered by Adam ordered to scout out the area. Samus leaves and finds herself inside the Blast Furnace Observation, where she encounters the Vorash from earlier and kills it to settle a score. Samus carries on and discovers the husk of the monster she was tracking stitched to a wall.
Samus and Anthony Geothermal Power Plant frosty Pyrosphere HD

Samus and Anthony meet up in the Geothermal Power Plant to engage the creature, which has now become airborne.

She meets up with Anthony again in the Geothermal Power Plant, where they are attacked by the creature's new form. Samus attempts to engage it, but is horrified to discover that it is in fact her nemesis, Ridley, reborn. Anthony is knocked over the edge of the platform by Ridley, and Samus battles the dragon once more. Ridley plays dead after the fight and escapes when Samus' guard is down by smashing his way out of the wall, leaving her to her feelings of remorse over what she believes was her friend's death. Samus then leaves the Pyrosphere for the Main Sector feeling shaken and wondering why contact with Adam has ceased.


Samus Cyborg Zebesian battle Pyrosphere HD

Samus battles a Cyborg Zebesian after activating her Ice Beam.

Official dataEdit


Gallery Mode

Nintendo of Europe press releaseEdit

"Or picture the Pyrosphere, an area filled with volcanoes and magma. Some areas here have such high temperatures that Samus’s health decreases if not equipped with the heat-resistent Varia Suit."

Metroid: Other M Art FolioEdit

Pyroclasm in the PyrosphereEdit

"The Pyrosphere, a simulated volcanic area encompassing Sector 3, was predictably awash in magma flows, lava pools, and a host of beasts adapted to extreme heat. Nonetheless, finding an erupting volcano caught me off-guard, especially when it began raining chunks of flaming rock on me. The Varia feature of my suit quickly became necessary."


"The Pyrosphere, a simulated volcanic area encompassing Sector 3, is predictably awash in magma flows, lava pools, and a host of beasts adapted to extreme heat. A pyroclasmic volcanic eruption necessitates the Varia feature of Samus's suit."



See AlsoEdit


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