Reactor Core Entrance (or Reactor Access in the Tallon Overworld) is a room in Metroid Prime on the Frigate Orpheon. It contains two Auto Defense Turrets that are easily dispatched with Missiles or charged shots, and a panel can be scanned to activate a Morph Ball hologram on the floor, which is used as in the previous room to open the next door. To the left, another door leads to a Save Station. The corpses of Space Pirates can be found lying around the room.

After the crash, the room becomes flooded. The door leading to the Freight Lift becomes de-energized and two Power Conduits must be shot with the Wave Beam to reactivate it.

Connecting rooms[]


Logbook entries[]


Auto Turret

Logbook entry

Subject >> Auto Defense Turret
Use Missiles to break outer casing.



Clamp door control

Temporary scan

This device does not seem to be functional. There must be something nearby that will turn it on.

Temporary scan

Door lock enabled.
Please insert metallic sphere to open door.

Temporary scan

It looks like a spherical shape would fit into this clamp.

Pirate arm cannon scanpic.png
Pirate face scanpic.png

Space Pirate

Temporary scan

Morphology: Space Pirate
Status >> Death caused by cranial trauma.

Pirate scanpic.png
Pirate vitruvian scanpic.png
Temporary scan

Morphology: Space Pirate
Status >> Death caused by severe lacerations.

Subject looks like it has been partially eaten.

Pirate arm cannon scanpic.png
Pirate schematics scanpic.png
Temporary scan

Morphology: Space Pirate
Status >> Dead. This creature looks like it struggled to get through this door.

Pirate arm cannon scanpic.png
Pirate face scanpic.png
Temporary scan

Morphology: Space Pirate
Status >> Death caused by acid burns to the face.


Temporary scan

Entrance to Save Station


Interface Module
"Primary door control is inoperable. Auxiliary controls must be used."
Interface Module (power restored)
"Auxiliary door controls online."
Powerless door
"This door has no power.
Two nearby Power Conduits must be energized for it to open. Blasts of electrical energy will energize the conduits. The conduits radiate some heat that is invisible in the normal spectrum."


"The Charge Beam can be used to draw in pickups.
Press and hold GC A button.png/Wii A button.png to draw in pickups."


  • This room, along with the Save Station, is known internally as 06_intro_to_reactor before the crash and 06_under_intro_to_reactor after the crash.
  • The "Intro Space" theme, which is heard when exploring rooms aboard the Orpheon before the Emergency Evacuation Area, again plays in this room before accessing the Reactor Core.
  • When utilizing the clamp to activate the door, any Auto Defense Turrets in the area will cease firing until Samus regains movement.
  • In the GameCube version, the blue door connecting to the Save Station can be opened with a Missile. This behavior is also present in Exterior Docking Hangar.
  • The large doors that require the clamp/the restored power to open are shown as Blue Doors on the Map despite not needing a beam shot at to open them.


Rooms in Metroid Prime
Frigate Orpheon Exterior Docking HangarMain Docking BayAir LockDeck Alpha Access HallEmergency Evacuation AreaDeck Alpha Umbilical HallMap FacilityConnection Elevator to Deck BetaDeck Beta Conduit HallBiotech Research Area 1Deck Beta Security HallBiohazard ContainmentDeck Beta Transit HallCargo Freight Lift to Deck GammaReactor Core Entrance
Save StationReactor Core

Deck Gamma Monitor HallConnection Elevator to Deck BetaSubventilation Shaft Section ASubventilation Shaft Section BMain Ventilation Shaft Section AMain Ventilation Shaft Section BMain Ventilation Shaft Section CMain Ventilation Shaft Section DMain Ventilation Shaft Section EMain Ventilation Shaft Section FBiotech Research Area 2Connection Elevator to Deck AlphaDeck Alpha Mech Shaft

Tallon Overworld Landing SiteCanyon CavernTallon CanyonTransport Tunnel ATransport to Chozo Ruins WestRoot TunnelRoot CaveArbor ChamberTransport Tunnel BTransport to Magmoor Caverns EastGullyAlcoveWaterfall Cavern

Temple HallTemple Security StationTemple LobbyArtifact Temple

Frigate Crash SiteOvergrown CavernTransport Tunnel CTransport to Chozo Ruins EastFrigate Access TunnelMain Ventilation Shaft Section CMain Ventilation Shaft Section BMain Ventilation Shaft Section AReactor CoreReactor AccessSave StationCargo Freight Lift to Deck GammaDeck Beta Transit HallBiohazard ContainmentDeck Beta Security HallBiotech Research Area 1Deck Beta Conduit HallConnection Elevator to Deck BetaHydro Access Tunnel

Great Tree HallGreat Tree ChamberTransport to Chozo Ruins SouthTransport Tunnel DTransport Tunnel ETransport to Phazon Mines EastLife Grove TunnelLife Grove

Chozo Ruins Transport to Tallon Overworld NorthRuins EntranceMain PlazaNursery AccessEyon TunnelRuined NurserySave Station 1North AtriumRuined GalleryMap StationTotem AccessHive TotemTransport Access NorthTransport to Magmoor Caverns NorthVault AccessVaultPlaza AccessRuined Shrine AccessRuined ShrineTower of Light AccessTower of LightTower ChamberRuined Fountain AccessRuined FountainMeditation FountainMagma PoolTraining Chamber AccessTraining ChamberPiston TunnelArboretum AccessSunchamber LobbySunchamber AccessSunchamberSun Tower AccessSun Tower

ArboretumGathering Hall AccessGathering HallSave Station 2Watery Hall AccessWatery HallDynamo AccessDynamoEast AtriumEnergy Core AccessEnergy CoreBurn Dome AccessBurn DomeWest Furnace Access

FurnaceEast Furnace AccessCrossway Access WestCrosswayCrossway Access SouthElder Hall AccessHall of the EldersElder ChamberReflecting Pool AccessReflecting PoolAntechamberSave Station 3Transport to Tallon Overworld EastTransport Access SouthTransport to Tallon Overworld South

Magmoor Caverns Transport to Chozo Ruins NorthBurning TrailSave Station Magmoor ALake TunnelLava LakePit TunnelTriclops PitStorage CavernMonitor TunnelMonitor StationTransport Tunnel ATransport to Phendrana Drifts NorthWarrior ShrineShore TunnelFiery ShoresTransport Tunnel BTransport to Tallon Overworld West

Twin Fires TunnelTwin FiresNorth Core TunnelGeothermal CorePlasma ProcessingSouth Core TunnelMagmoor WorkstationWorkstation TunnelTransport Tunnel CTransport to Phendrana Drifts SouthSave Station Magmoor BTransport to Phazon Mines West

Phendrana Drifts Transport to Magmoor Caverns WestShoreline EntrancePhendrana ShorelinesSave Station BIce Ruins AccessIce Ruins EastPlaza WalkwayRuins EntrywayIce Ruins WestCanyon EntrywayPhendrana CanyonTemple EntrywayChozo Ice TempleChapel TunnelChapel of the Elders

Courtyard EntrywayRuined CourtyardSave Station ASpecimen StorageResearch EntranceMap StationHydra Lab EntrywayResearch Lab HydraObservatory AccessObservatorySave Station DWest Tower EntranceWest TowerControl TowerEast TowerAether Lab EntrywayResearch Lab AetherResearch Core AccessResearch CoreQuarantine AccessNorth Quarantine TunnelQuarantine CaveQuarantine MonitorSouth Quarantine TunnelTransport to Magmoor Caverns South

Transport AccessFrozen PikePike AccessFrost Cave AccessFrost CaveSave Station CUpper Edge TunnelPhendrana's EdgeStorage CaveSecurity CaveLower Edge TunnelHunter CaveLake TunnelGravity ChamberChamber AccessHunter Cave Access

Phazon Mines Transport to Tallon Overworld SouthQuarry AccessMain QuarrySave Station Mines ASecurity Access AMine Security StationSecurity Access BStorage Depot AElite ResearchResearch AccessOre ProcessingElevator Access AElevator AStorage Depot BWaste Disposal

Elite Control AccessElite ControlMaintenance TunnelVentilation ShaftControl RoomOmega ResearchMap Station MinesDynamo AccessCentral DynamoSave Station Mines BQuarantine Access AMetroid Quarantine AElevator Access BElevator B

Fungal Hall AccessFungal Hall APhazon Mining TunnelFungal Hall BMissile Station MinesQuarantine Access BMetroid Quarantine BSave Station Mines CElite Quarters AccessElite QuartersProcessing Center AccessPhazon Processing CenterTransport AccessTransport to Magmoor Caverns South

Impact Crater Crater Entry PointCrater Tunnel APhazon CoreCrater Missile StationCrater Tunnel BPhazon Infusion ChamberSubchamber 1Subchamber 2Subchamber 3Subchamber 4Subchamber 5Metroid Prime Lair
Unused Engine RoomReactor Room