A complete 1960s family bomb shelter below a backyard: steel hatch, entry shaft, blast door, bunks, living room, kitchen stores, generator and air filtration, washroom. Stocked and abandonedURP (Unity 2022.3+) is the main pipeline: demo scenes and materials are URP. For Built-in RP projects, import the included N36_BuiltIn_Materials.unitypackage.One purchase covers the family shelter both ways: stocked and lived-in, then looted, damp and partly collapsed, with 126 separate props.Fictional brands, labels and signs only. No weapons, no people, no vehicles.Key facts7 connected areas: backyard exterior with steel hatch and vent pipes, entry shaft with fixed ladder and blast door, bunk room, living and dining room, kitchen and pantry stores, generator and air-filtration room, washroom.Active state is stocked and lived-in; Abandoned state is looted and damp, with fallen shelves, collapsed vent shafts, peeling paint, dirt, rust stains and wet floors.Sleeping and living: steel bunks (made, stripped), folding canvas cot, footlocker, blankets, plush bear, vinyl sofa with rolled arms, chrome dinette set, folding chair, pine bookcase with book rows, board games, checkers in play, braided rug.Stores: 8 food can variants (4 labels, dented, rusted), preserve jars, cartons (crackers, milk, soup; sagged, torn), grain sacks, sealed pails, cracker tins, 6 water drum variants, plastic water can, pine pantry shelves, wooden pallet.Services: diesel generator on skid, hand-crank air blower, standing filter, day fuel tank, lead battery bank, fuse panel, workbench, toolbox, camp stove and propane tank, steel kitchen cabinets with hand pump, toilet, wall basin, medicine cabinet, shower riser and curtain.Every prop ships as one FBX with a single all-quad LOD0 mesh and a prefab with box / mesh colliders; power-of-two textures.Known issues2 of 126 props and 7 of 18 shell parts have a UV1 lightmap channel below the 4 px padding at 128 px check: use a lightmap resolution of 512+ (or Generate Lightmap UVs on the shells), or realtime lighting.Trees, grass and weeds seen in the backyard screenshots are render dressing and are not included.The rooms are placed side by side in the demo scenes; build your own level layout from the area shells.Unique meshes: 144 (126 props and modules, 18 shell parts)Triangles: props 2 - 9,312 per asset (median 386; all 126 props 102,178); shell parts 100 - 31,948 (all 18 shells 125,360)Topology: 100 % quads (0 triangles, 0 n-gons, no degenerate faces); one LOD0 mesh per asset (no LOD chain)Collision: BoxCollider on props, MeshCollider on pieces over 1.5 m and on the building shells (prefabs); no UCX meshes in the FBXTextures: 378 files, PBR maps BaseColor, Normal, MetallicSmoothness (built from ORM); decals RGBA, power-of-two sizes up to 2048 pxScale: Real-world, 1 unit = 1 m, Y up in UnityRooms: 7 areas, architecture included as FBXStates: clean / abandonedRender pipeline: URP (Unity 2022.3+); demo scenes Demo_Active / Demo_Abandoned and an Overview scenePrefabs: one per asset, with colliders
