281 modular sewer and catacomb pieces in a hand painted style: canal tunnels, halls, crypts, water, pipes, props and lights, with LODs, colliders and a URP demo scene.A modular kit for sewers, cisterns, crypts and catacombs in a painterly, hand painted style for URP. Canal tunnels run with walkways on both sides, bend at 90 and 45 degrees, fork and cross, and widen into 8 m collectors. They connect to reservoir halls with pillars standing in deep water, chambers with cross vaults, domed octagon rooms, galleries, spiral stair towers and ladder shafts. Burial niches, ossuary walls and crypt pillars make up the catacombs, and a breach piece joins them to the sewers.Contents- 106 architecture pieces: tunnels (straight, bends, diagonals, T, cross, Y fork, dead end, slope, weir), wide 8 m tunnels with the same set, dry tunnels, dry to wet transitions, crawl pipes, chamber walls with openings, doors and pipe mouths, floors, pools with edges and stairs, pillars, vault cells and ribs, octagon walls and domes, galleries, shafts, spiral stair, outfall facade, burial niche walls, ossuary wall, breach- 46 water pieces: canal water for every tunnel piece, flood water, pool plane, small and wide falls, foam ring- 102 props: bridges, sluice gates, portcullis, grille gates, cell bars, doors, trapdoor, floor grate, iron and copper pipe system with valves and outlets, winch, dock planks, boat, barrels, crates, chests, smuggler camp, coffins, sarcophagi, altar, urns, skulls, bones, garbage, rubble, rat nest- 11 light props with point lights: wall torch, lanterns, candles, candle niche, brazier, campfire, bone shrine, sludge pipe glow- 16 organic pieces: slime, algae at the waterline, moss, roots, glowing fungi, mushrooms, cobwebs, floating debrisSetupImport the package. It contains ready materials and prefabs with LOD Groups, mesh colliders and lights. Open Scenes/Demo_Sewers for a full level or Scenes/Overview_Sewers to see every mesh. Tools > Stylized Sewers > Setup Pack rebuilds the prefabs if you change a model.GridCells are 4 x 4 m on a 0.5 m grid and walls are 4 m high. The walkway is at height 0 and the canal bed 1 m lower. Each water piece shares the pivot of its tunnel.Designed with Claude, modelled procedurally in Blender, reviewed and finished by a 3D artist.- Unity 6, URP 17, Forward and Forward+- 281 meshes, 281 prefabs- Triangles (LOD0): walls 2.5k to 25k (median 12k), wide bends and ossuary 43k to 62k, wide Y fork 96k, props 0.06k to 7.2k (median 0.5k), 1.49 million for all meshes together- LODs: LOD0, LOD1 (about 50 %), LOD2 (about 20 %), set up as LOD Groups- Collision: mesh colliders on 219 prefabs; none on water and organic dressing- Textures: 2048 x 2048 (base colour, normal, ORM), normal maps OpenGL- Shaders: 7 custom URP shaders; vertex colours drive brightness and grime- UV mapping: yes- Rigging: no. Animation: no- Scale: 1 unit = 1 m, real world scale- Demo and overview scene includedClaude (Anthropic) was used to plan the kit and to write the Python scripts that model the meshes and generate the textures procedurally in Blender. No AI image or 3D generators were used. A 3D artist reviewed every asset and finished the pack. Designed with Claude, modelled procedurally in Blender, reviewed and finished by a 3D artist.
