About
Original sewer kit with hollow pipes, open channels, helical machinery, raised ledges and dry hideout furnishings. Metres, +Y up, +Z front; static geometry without animation, collision or navigation.
Files load directly from the CDN. Choose the pieces you need. Colliders, navigation and gameplay scripts are supplied by your game.
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Use the “Undercity Sewers and Thieves Den” pack in my project. Manifest (JSON, every model with its CDN URL): https://3dassets.dev/api/v1/packs/undercity-sewers-and-thieves-den Starter scene (one GLB with every piece placed): https://cdn.3dassets.dev/assets/17698/v1/model.glb Pack page: https://3dassets.dev/packs/undercity-sewers-and-thieves-den Description: Vaulted brick waterways, cisterns, maintenance machinery and a concealed den. - 124 GLB models, 12.7 MB in total - Units: metres, +Y up, shared scale and palette across the pack - Licence: CC0 1.0 Universal (no attribution required) - Loading: three.js GLTFLoader; no additional decoders required. Load models individually from the manifest, or the starter scene as one file.
Also available as a JSON manifest or via the MCP server.
Game kit
Undercity Sewers and Thieves Den
Vaulted brick waterways, cisterns, maintenance machinery and a concealed den.
One GLB with every piece placed in a starter scene. Each model is also below on its own.
Everything in this pack
Brick Barrel Tunnel (Undercity Sewers and Thieves Den)
Four-metre brick barrel sewer with vaulted roof, rib arches, a two-metre channel and raised ledges.
Smooth Vault Tunnel (Undercity Sewers and Thieves Den)
Continuous barrel vault with plain masonry sides for long economical runs.
Flat Soffit Tunnel (Undercity Sewers and Thieves Den)
Low stone box sewer with rectangular end portals and flat structural soffit.
Low Vault Tunnel (Undercity Sewers and Thieves Den)
Low brick arch run with reduced crown and broad maintenance ledges.
Egg Section Tunnel (Undercity Sewers and Thieves Den)
Tall narrow egg-profile approximation with a round crown and steep inner walls.
Crawl Tunnel (Undercity Sewers and Thieves Den)
Low crawl culvert with enclosed arch shell, for restricted passages.
Arch Portal (Undercity Sewers and Thieves Den)
Freestanding open brick arch portal with segmented crown and masonry jambs.
Tunnel End Wall (Undercity Sewers and Thieves Den)
Dead-end channel bay with a masonry stop wall and damp central stain.
Iron Grille Wall (Undercity Sewers and Thieves Den)
Riveted full-width iron grille across the channel with narrow vertical bars.
Sluice Gate Module (Undercity Sewers and Thieves Den)
Channel sluice in a cast-iron frame with separate pivoted gate leaf and manual wheel.
Overflow Weir (Undercity Sewers and Thieves Den)
Broad-crested overflow sill crossing the two-metre water channel.
Stepped Drop (Undercity Sewers and Thieves Den)
Five transverse stepped stone drops for a cascading sewer reach.
Pillar Bay (Undercity Sewers and Thieves Den)
Reinforced vault bay with eight-course stone piers and a clear central channel.
Buttressed Wall (Undercity Sewers and Thieves Den)
Four-metre brick retaining wall reinforced by projecting stone buttresses.
Dry Side Passage (Undercity Sewers and Thieves Den)
Dry two-metre service passage with a paved floor and full arched shell.
Inlet Pipe Wall (Undercity Sewers and Thieves Den)
Brick sidewall and a large riveted inlet pipe projecting into the channel.
Timber Repair Walkway (Undercity Sewers and Thieves Den)
Paired temporary timber ledges with four iron barrier posts beside the open channel.
Inspection Crossing Bay (Undercity Sewers and Thieves Den)
Anti-slip iron crossing plate bridging the channel between raised maintenance ledges.
Ladder Shaft (Undercity Sewers and Thieves Den)
Open cylindrical access shaft with twelve recessed iron climbing rungs.
Manhole Shaft (Undercity Sewers and Thieves Den)
Narrow masonry manhole shaft with a heavy rolled iron seat at the surface.
Pipe Gallery (Undercity Sewers and Thieves Den)
Open utility gallery with paired longitudinal pipelines mounted above channel ledges.
Shored Channel (Undercity Sewers and Thieves Den)
Open sewer reach supported by two complete timber shoring frames.
Brick Barrel Short (Undercity Sewers and Thieves Den)
Two-metre filler length of the brick barrel sewer.
Brick Barrel Open Cutaway (Undercity Sewers and Thieves Den)
Open inspection cutaway retaining the channel and both ledges.
Brick Barrel Collapsed (Undercity Sewers and Thieves Den)
Collapsed barrel section with one surviving portal and masonry debris.
Ledge Left (Undercity Sewers and Thieves Den)
Left-only one-metre maintenance ledge.
Ledge Right (Undercity Sewers and Thieves Den)
Right-only one-metre maintenance ledge.
Ledge Railed (Undercity Sewers and Thieves Den)
Open cutaway bay with an iron handrail on the left ledge.
Dry Passage Short (Undercity Sewers and Thieves Den)
Two-metre service passage filler.
Grille Broken (Undercity Sewers and Thieves Den)
Broken grille frame with its central bars removed for an access breach.
Brick Barrel Curve (Undercity Sewers and Thieves Den)
Quarter-turn channel with continuous curved inner and outer ledges and three masonry ribs.
Brick Channel Slope (Undercity Sewers and Thieves Den)
Four-metre sloping channel raising waterway and both maintenance ledges by half a metre.
T Junction (Undercity Sewers and Thieves Den)
Three-way open water junction with continuous terminal maintenance ledges.
Cross Junction (Undercity Sewers and Thieves Den)
Four-way open channel crossing with corner maintenance pads.
Y Fork (Undercity Sewers and Thieves Den)
Continuous polygonal Y-fork with two diagonal two-metre channels, outer walks and a central maintenance island.
Cistern Hall Floor (Undercity Sewers and Thieves Den)
Six-metre cistern floor with central water pool and perimeter access margin.
Cistern Columns (Undercity Sewers and Thieves Den)
Four cylindrical masonry columns with broad stone bases and capitals.
Cistern Vault (Undercity Sewers and Thieves Den)
Broad free-standing cistern vault shell spanning 5.4 metres; place on column capitals.
Penstock Chamber (Undercity Sewers and Thieves Den)
Widened channel chamber with retaining walls and a large manual penstock wheel.
Pump Room Shell (Undercity Sewers and Thieves Den)
Open cutaway pump room shell with masonry walls, dry floor and inset rear arch.
Outfall Arch (Undercity Sewers and Thieves Den)
Large dressed-stone outfall arch with projecting apron and a water outlet.
Stone Channel Bridge (Undercity Sewers and Thieves Den)
Low arched stone footbridge crossing a two-metre channel on solid end bearings.
Plank Bridge (Undercity Sewers and Thieves Den)
Timber plank bridge with two continuous supporting stringers and fitted cross boards.
Iron Footbridge (Undercity Sewers and Thieves Den)
Riveted iron footbridge with paired handrails and twelve anti-slip deck bars.
Spiral Stair To Surface (Undercity Sewers and Thieves Den)
Eighteen-tread spiral access stair rising 2.88 m around a central iron mast.
Culvert Mouth (Undercity Sewers and Thieves Den)
Short low culvert mouth with a thick stone arch and apron.
Settling Tank (Undercity Sewers and Thieves Den)
Open settling tank with perimeter masonry and a central submerged baffle.
Weir Pool (Undercity Sewers and Thieves Den)
Broad shallow settling pool with a transverse stone overflow sill.
Silt Bank (Undercity Sewers and Thieves Den)
Low accumulated silt bank formed from overlapping smooth sediment humps.
Debris Dam (Undercity Sewers and Thieves Den)
Tangled discarded beams and a rusted metal container blocking a channel edge.
Rat Nest Heap (Undercity Sewers and Thieves Den)
Nest of rag scraps, straw-coloured lumps and short splinters; no live animals.
Brick Vault Junction (Undercity Sewers and Thieves Den)
Vaulted junction frame with an open cross channel and paired terminal masonry ribs.
Cistern Inspection Island (Undercity Sewers and Thieves Den)
Circular raised cistern inspection island with a short safety rail.
Arched Den Threshold (Undercity Sewers and Thieves Den)
Dressed stone doorway and dry timber threshold marking the concealed den entrance.
Archimedean Screw Pump (Undercity Sewers and Thieves Den)
Exposed helical lift screw on a longitudinal shaft, supported in twin bearings above a masonry bed.
Beam Pump (Undercity Sewers and Thieves Den)
Rocking beam pump with cylinder, piston rod, central fulcrum and counterweight.
Valve Wheel (Undercity Sewers and Thieves Den)
Six-spoke rusted hand wheel with central spindle hub.
Penstock Gate (Undercity Sewers and Thieves Den)
Sliding iron gate with named gate slab, guides, screw stem and hand wheel.
Iron Pipe Straight (Undercity Sewers and Thieves Den)
Hollow two-metre cast iron pipe with bolted end flanges.
Iron Pipe Elbow (Undercity Sewers and Thieves Den)
Open quarter-turn pipe elbow with flanged ends.
Iron Pipe Tee (Undercity Sewers and Thieves Den)
Tee fitting with three bolted pipe mouths.
Iron Pipe Flange (Undercity Sewers and Thieves Den)
Loose heavy circular pipe flange with open bore and raised sealing lip.
Drain Grate (Undercity Sewers and Thieves Den)
Removable rectangular drain grate with eight open drainage slots.
Gutter Channel (Undercity Sewers and Thieves Den)
Narrow open stone gutter with continuous raised sides.
Iron Ladder (Undercity Sewers and Thieves Den)
Nine-rung vertical iron access ladder with continuous side rails.
Wall Rung Set (Undercity Sewers and Thieves Den)
Five U-shaped masonry ladder rungs with projecting grips.
Chain Hoist (Undercity Sewers and Thieves Den)
Compact chain hoist with alternating links and a curved lower hook.
Bucket Chain (Undercity Sewers and Thieves Den)
Vertical bucket elevator with seven open scoops and upper and lower return wheels.
Oil Lamp Niche (Undercity Sewers and Thieves Den)
Masonry lamp niche with a lantern supported on its projecting sill.
Gas Lamp Bracket (Undercity Sewers and Thieves Den)
Diagonal wall bracket carrying a glazed gas-style inspection lantern.
Sewer Key (Undercity Sewers and Thieves Den)
Long T-handle sewer key with a rectangular lifting toe.
Inspection Hatch (Undercity Sewers and Thieves Den)
Square hinged inspection cover with lifting ring in a stone surround.
Iron Service Door (Undercity Sewers and Thieves Den)
Named hinged iron service door in a fixed metal jamb.
Portcullis Grille (Undercity Sewers and Thieves Den)
Upright heavy iron grille with open vertical slots in a rectangular outer frame.
Chain Barrier (Undercity Sewers and Thieves Den)
Slack alternating-link chain between two capped safety posts.
Warning Plaque (Undercity Sewers and Thieves Den)
Metal hazard plaque with an abstract exclamation mark, no readable text.
Mile Marker (Undercity Sewers and Thieves Den)
Freestanding stone channel marker with inset metal tally plate.
Brick Pile (Undercity Sewers and Thieves Den)
Twelve loose repair bricks stacked in two stable courses.
Mortar Bucket (Undercity Sewers and Thieves Den)
Open metal bucket containing a shallow mortar fill and arched handle.
Wheelbarrow (Undercity Sewers and Thieves Den)
Open timber wheelbarrow with a single iron wheel, handles and rear legs.
Sandbag Stack (Undercity Sewers and Thieves Den)
Three offset courses of rounded cloth sandbags.
Timber Shoring Set (Undercity Sewers and Thieves Den)
Braced timber shoring portal with paired diagonal knees.
Rope Pulley (Undercity Sewers and Thieves Den)
Grooved timber pulley wrapped by a continuous curved rope.
Maintenance Handcart (Undercity Sewers and Thieves Den)
Low two-wheel maintenance cart with extended hauling shafts.
Coal Scuttle (Undercity Sewers and Thieves Den)
Open iron coal scuttle with raised loop handle and visible fuel load.
Water Butt (Undercity Sewers and Thieves Den)
Large banded timber water butt with a small brass drain fitting.
Pressure Gauge (Undercity Sewers and Thieves Den)
Round brass pressure gauge with pale dial and a fixed diagonal needle.
Pipe Hanger (Undercity Sewers and Thieves Den)
Suspended pipe collar with rigid ceiling stem and mounting plate.
Wall Tap (Undercity Sewers and Thieves Den)
Brass wall tap with cross handle and downward outlet.
Drain Basket (Undercity Sewers and Thieves Den)
Lift-out drain basket with slotted floor and upper handling loop.
Screen Rake (Undercity Sewers and Thieves Den)
Long-handled three-tooth screen rake for lifting coarse channel debris.
Sluice Stem Housing (Undercity Sewers and Thieves Den)
Bolted sluice stem pedestal with exposed upper screw rod.
Maintenance Gantry (Undercity Sewers and Thieves Den)
Portable two-legged lifting gantry with broad footplates and hanging eye.
Grate Surround (Undercity Sewers and Thieves Den)
Open stone drainage surround with four recessed bearing edges.
Fences Counter (Undercity Sewers and Thieves Den)
Tall trade counter with solid modesty panel and a small brass transaction plate.
Loot Sorting Table (Undercity Sewers and Thieves Den)
Sorting table with three divided work areas and a rear retaining lip.
Lockpick Bench (Undercity Sewers and Thieves Den)
Fictional locksmith bench with vise block, leather mat and three simple blank tools.
Forgelet (Undercity Sewers and Thieves Den)
Small repair hearth with glowing fuel, rear flue and an adjacent anvil block.
Hammock (Undercity Sewers and Thieves Den)
Sagging cloth hammock between timber supports, built from connected woven strips.
Cot (Undercity Sewers and Thieves Den)
Low cot with cloth mattress and a distinct pillow.
Crate Bed (Undercity Sewers and Thieves Den)
Improvised sleeping platform resting on two braced cargo crates.
Stolen Goods Crates (Undercity Sewers and Thieves Den)
Three tightly stacked braced cargo crates with a stable upper load.
Den Strongbox (Undercity Sewers and Thieves Den)
Small strapped cash box with a named lid and brass locking plate.
Hidden Door Bookcase (Undercity Sewers and Thieves Den)
Book-filled rotating bookcase mounted in masonry jambs; all moving pieces share one named pivot.
Den Trapdoor (Undercity Sewers and Thieves Den)
Named oak floor trapdoor inside a fixed timber bearing frame.
Rope Ladder (Undercity Sewers and Thieves Den)
Seven timber rungs lashed between continuous rope sides.
Signal Lantern (Undercity Sewers and Thieves Den)
Hand lantern with a single opaque green signal shutter.
Dice Table (Undercity Sewers and Thieves Den)
Cloth-topped gaming table with two small unmarked dice.
Stew Pot (Undercity Sewers and Thieves Den)
Open cooking pot with a visible stew surface and raised carrying bail.
Wanted Poster Wall (Undercity Sewers and Thieves Den)
Brick wall covered with five blank abstract portrait notices, without names or readable text.
Disguise Rack (Undercity Sewers and Thieves Den)
Freestanding costume rail with three hanging garments and broad felt hats.
Den Weapon Rack (Undercity Sewers and Thieves Den)
Timber equipment rack with three original generic blades and leather grips.
Map Of City (Undercity Sewers and Thieves Den)
Flat parchment city diagram with a street grid and one marked district; no real geography.
Coin Sacks (Undercity Sewers and Thieves Den)
Two tied cloth purses with rounded bodies and gathered necks.
Jewellery Tray (Undercity Sewers and Thieves Den)
Small wooden display tray carrying two rings and a curved chain.
Fake Wall Panel (Undercity Sewers and Thieves Den)
Removable brick-faced concealment panel on rear timber battens.
Guard Post (Undercity Sewers and Thieves Den)
Compact watch station with a protected timber front and inspection lantern.
Dog Kennel (Undercity Sewers and Thieves Den)
Open-front timber kennel with a two-slope roof and raised dry floor.
Spike Trap Plate (Undercity Sewers and Thieves Den)
Static fictional trap plate with nine tapered spikes; no mechanism or game logic.
Tripwire Bell (Undercity Sewers and Thieves Den)
Small fictional alarm bell and a visible low cord; supplied as a static prop.
Outfall to Cistern (Undercity Sewers and Thieves Den)
Composed example for Undercity Sewers and Thieves Den.
Thieves Den (Undercity Sewers and Thieves Den)
Composed example for Undercity Sewers and Thieves Den.
Sewer Connector Cases (Undercity Sewers and Thieves Den)
Composed example for Undercity Sewers and Thieves Den.
Curves Forks and Slope (Undercity Sewers and Thieves Den)
Composed example for Undercity Sewers and Thieves Den.
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