Main Reactor

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Main Reactor
Main Reactor.png

Samus entering the Main Reactor for the first time

Game Metroid Prime 2: Echoes

Agon Wastes

Connected Rooms

Dark Oasis


The Main Reactor is a room in the Agon Wastes. The room connects the Sand Processing, Storage D, Ventilation Area A, by a White Hatch, and Security Station B, by a Purple Hatch.

Appearance and Navigation

The room consists of a central room, surrounded by an upper walkway. The center room is taken up by a large number of tanks that contain large amounts of Phazon. The largest of these tanks is located in the center of the room. There are a series of tanks on one side of the room that can be navigated through using Spider Ball Tracks and the Boost Ball. Each tank has moving parts that will block the way, along with damaging Phazon on the bottom. If Samus falls to the bottom, she can leave each tank using a small hole leading back to the main room. If Samus successfully navigates the tanks, she will acquire a Missile Expansion at the end.

The upper walkway has two sections. The main section has doors to the Sand Processing, Storage D, and Security Station B. The latter door is separated by a gate that can be lowered by hitting a white crystal with the Dark Beam. There is an elevator connecting the levels near Storage D. There is also a large opening near the door to the Sand Processing, next to a dark purple area that is the destination of a Portal in the Dark Oasis. The Door to Ventilation Area A is located in a separate section, that can only be accessed from below using a Spider Ball Track. This section has the corpse and final testament of B-Stl. When Samus first enters the room, she sees Dark Samus absorbing energy from the central tank. Upon entering the central area, a battle between the two "Hunters" will start. When Dark Samus has been destroyed, the elevator will be activated.


Missile Expansion

Requires: Spider Ball and Boost Ball

  • Once Samus has obtained the Spider Ball, she can enter a ledge above the Phazon containers in the northern part of the room. By using the Boost Ball, she can bounce between various platforms to reach the opposite side of the ledge, where the expansion can be found under a hatch in the ground that be destroyed using a Morph Ball Bomb.


Available Logbook Entries

*Denotes limited scan


Metroid Prime Trilogy Only


Creature Number Encountered
Dark Samus 1  First visit  


Sky Temple Grounds Dark Agon Wastes Dark Torvus Bog Ing Hive Sky Temple
Temple Grounds Agon Wastes Torvus Bog Sanctuary Fortress Great Temple
  1. "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." —Scan Data (Metroid Prime 2: Echoes)
  2. "There is a Blast Shield on the door blocking access. Analysis indicates that the Blast Shield is invulnerable to most weapons. Dark energy may damage it." —Scan Data (Metroid Prime 2: Echoes)
  3. "There is a Blast Shield on the door blocking access. Analysis indicates that the Blast Shield is invulnerable to most weapons. Light energy may damage it." —Scan Data (Metroid Prime 2: Echoes)
  4. "Door system access denied.
    Unable to bypass security codes. Seek an alternate exit.
    " —Scan Data (Metroid Prime 2: Echoes)
  5. " Security systems active. Unique energy required for door access. Energize door with Dark Energy to open it." —Scan Data (Metroid Prime 2: Echoes)
  6. " Elevator platform active." —Scan Data (Metroid Prime 2: Echoes)
  7. "Magnetic rail system track detected. Real system powered and active. Spider Ball technology required to access track." —Scan Data (Metroid Prime 2: Echoes)
  8. "Missile Expansion Increases the number of Missiles you can carry by 5." —Scan Data (Metroid Prime 2: Echoes)
  9. "Structural analysis complete. This is a standard Kellium energy reactor, converted by the Space Pirates to process Phazon energy. Building levels at 220% and holding." —Scan Data (Metroid Prime 2: Echoes)