The Main Plaza is a room in the Chozo Ruins. It appears in Metroid Prime.


As the name implies, it is one of the major rooms in the area. When Samus enters the room, she will be in front of a large ground, with Beetles hiding in the sand. To her left is the passageway to the Ruined Shrine, and on her right is a decomposing Cyrlic tree. In front of her is a Half-pipe that she cannot use until she gains the Boost Ball. The Half-pipe is used to get a Missile Expansion in an alcove. Samus must climb several stairs to get to the next floor of the room. Far above on the right is an indestructible door and Energy Tank, Samus will have to enter the room from the Vault to gain it. She will also find several platforms leading to a damaged bridge (stones had fallen from the walkway). Another Cyrlic tree that has been forcibly intertwined to form a bridge leads to two War Wasp Hives. Above the lowermost floor is a Grapple Point; scanning it states that it is too far away to use. Samus must enter the room from Piston Tunnel to be able to reach it. Later on in the game, the Beetles are replaced with a single Plated Beetle.

A Hidden World can be found in this room: [1]

Connecting rooms[]


War Wasps in the Plaza.


Missile Expansion
In an alcove above the half-pipe in the center of the room, which can be accessed with the Boost Ball. It is also possible in the NTSC GameCube version to get this using a Slope Jump on the side of the half-pipe.
Missile Expansion
Beneath a stump in the Cyrlic Tree opposite the entrance to the Ruined Shrine, which can be blown open by a Super Missile.
Missile Expansion
On a ledge above the entrance to the Ruined Shrine, gotten by grappling across the room after going though the Magma Pool and Training Chamber.

The room's Energy Tank.

Energy Tank
On a high ledge. Accessible only through a one way door from the Vault


Cyrlic tree (not named)
"This tree seems to be weakened due to cellular decomposition."
"Passageway to Shrine"
Missile Expansion
"This object rests at the top of a very smooth inclined slope."
Tree leaf
"These leaves appear to be unnaturally dried and withered."
Energy Tank
"The ledge this object rests on cannot be reached from this room."
"This door can only be opened from the other side."
"These stones appear to have fallen from the walkway above."
Tree bridge
"These large branches have been forcibly intertwined, forming what looks to be a bridge structure."
"This etching resembles a birdlike creature."

Samus uses the Grapple Beam to reach a Missile Expansion.

Grapple Point
"This Grapple Point is too far away to use."

Development notes[]

The Main Plaza was modeled and skinned by Elizabeth Foster.

Jack Mathews stated in a live stream that the Main Plaza was one of the first rooms built during the development of Metroid Prime.[1] It was subsequently used for stress testing as the game was created. The room's performance impact can be seen when Prime is played on an emulator such as Dolphin, as it frequently causes frame rate drops and stuttering.


  • The Birds flying around in the sky can be shot at and killed, their feathers slowly drifting down before disintegrating.
  • The Main Plaza is the room with the most Missile Expansions in the game.
  • By using the Space Jump Boots from the roof over the entrance to the Ruined Shrine onto a ledge seemingly blocked off by sand, one can get the Missile Expansion there early. Strangely, the Grapple Point over the Plaza can be scanned here for its Logbook entry, even if the player has not yet acquired the Grapple Beam.



  1. ^ (2015, December 7). Extra Life 2015 (Part 2) [Stream]. Crackdown. Twitch. Archived from the original on June 11, 2022.

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 HallSubventilation 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