GMS compound

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First major "dungeon" the player visits during Underrail storyline. It is located in Lower Underrail, and can be accessed via the Lower Underrail exit from South Gate Station, by heading north from the station platform on SGS level 1.

The player travels there during Gorsky's task and is tasked with finding a way to open the sealed door on the first level of GMS compound.

Level 1

The initial level, full of rathounds. Contains a large sealed door near the entrance.

An Omni-Tool can usually be found somewhere on the first level, and it proves useful as the whole compound proper is full of accessible ventilation shafts.

The power generator for the whole compound is also on this level.

Rathound nest

A natural cave with even more rathounds in it.

Level 2

A level largely devoid of living creatures. Armed Sentry Bots roam around.

Level 3

A small settlement, recently taken over by raiders.

Burrower Caves

Burrower nesting area near the GMS compound.

v · d · e Locations

Named locales of Underrail. See also Global Map and Zones.

Upper Underrail

Stations	Core City Upper Metro Station • Epione Lab • Polemos Station (Fort Apogee) • University Station (Institute of Tchort) • Eos Complex • Dolos Center • Nyx Station • Notus Living Block • Harpocrates Station

Dungeons	Panacea Lab • Emporion Shopping Mall • Institute of Tchort west wing • Utility Station 6 • Utility Station 7 • Toxic Waste Processing Plant • Utility Tower

Other	Dude's House ^E • Dark Territory ^HD • The Compound ^HD

Lower Underrail (Lower Passages, Upper Caves)

Stations	South Gate Station • Omega Station • South Railroad Outpost • Rail Crossing • Foundry • Core City (Drop Zone, Port Zenith, Arena, Gauntlet, Hardcore City Bar, Coretech warehouse, Derelict Warehouse, Talloski Manor, Your House, Dude's House ^E, Rag's Boutique ^HD)

Dungeons	GMS compound • Abandoned Warehouse • Warehouse Block Beta • Crystal Cave • Zaman's Lair • Abandoned Biocorp Facility • Lurker Base • Hephaestus Research • Bunker • Hecate Research Outpost • RAF 013

Other	GMS warehouse block • Warehouse Block Alpha • Foundry Mine • Foundry Prison • Lost Vault • Hanging Rat • Synesthete camp • Utility Facility • Coretech Research Facility • Free Drones Base • Oculus • Secluded Station

Lower Caves

Towns	South Gate Station Docks • Junkyard (Gate, Main street, Depot B, Docks, Slums, East residential, Back alley, Elwood's House, Gambling house, Wormhole, Secret Passage) • United Stations Embassy • Camp Hathor • Core City Docks

Dungeons	South Gate Outposts • Silent Isle • Abandoned Building • Depot A (South, East, North, West, Lower west, Lower east, Caved-in area) • Battery Recycling Plant • Hathor Mine • Rathound King Lair • Forsaken Island

Other	Crossroad Watch • Crossroad Caves • Mushroom Cove • Siphoner Pools (Lower Caves) • Core City Sewers • Core City Underground • Dude's House ^E

Waterways	The Rig ^E • Rig Periphery • Core Ring (Protectorate Outpost) • Core City Sewer Exit • Scrappy Narrow • Chancer's Bay • Omega Pass • Black Strait • Dreadpool • Isaac's River • Meatway • Hunting Grounds (Rathound Lair) • Old Ib's Homestead • Abandoned Waterway Facility

Deep Caverns

	Arke Power Station • Caerus Residential • Cytosine Outpost • Hollow Earth • Labyrinth • Mushroom Forest • Mutagen Tanks • Nucleus • Rathound Lair • Strange Shack • Talos Outpost • Tithonus Laboratory • Warehouse Block 2

Random locations

	Low level bunker 1 • Low level bunker 2 • Low level bunker 3 • Low level bunker 4 • Low level cave 1 • Low level cave 2 • Low level cave 3 • Low level cave 4 • Lower Passages (Random dungeon) • Water Treatment Facility • Core City Sewers Channels • Core City Sewers Furnace • Core City Sewers Pipes • Core City Office Building ^E • Jet Eater Lair ^E • Hopperdrome ^E • Drag 'n' Drop ^E

Contents

Level 1

Rathound nest

Level 2

Level 3

Burrower Caves

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