Deterministic corridor-first sci-fi facility generator for top-down shooters, with 54 production prefabs, runtime API, JSON seeds and a playable URP demo.Designed and validated for Unity 6000.3.21f1 with Universal Render Pipeline 17.3.0. URP only. No external Asset Store package dependencies.Generate connected corridor-first sci-fi facilities at runtime from a seed. Build a critical path from Start to Exit, then add bounded branches, loops, gated encounters, readable dead ends and decoration. The same request and seed reproduce the same validated layout hash.The package includes a public runtime API, progress/completed/failed events, runtime UI, JSON request import/export, top-down and free-fly cameras, WebGL query parameters, graph output and a playable demo. Custom 1 x 1 modules can be added through LevelModuleDescriptor and LevelModuleCatalog.Production content includes 54 normalized customer prefabs, 53 FBX models, 149 URP materials, 466 textures, 15 socket-topology generator modules and 25 curated runtime prop prefabs. The 54 prefabs comprise 24 architecture sections, 25 props, 2 robots/NPCs and 3 complete source rooms.Designed and validated for Unity 6000.3.21f1 with Universal Render Pipeline 17.3.0. The package is URP-only. Documentation and runtime API reference are included under Assets/TopDownLevelAsset/Documentation.- Unity 6000.3.21f1; Universal Render Pipeline 17.3.0 (URP only)- 54 normalized customer prefabs: 24 architecture sections, 25 props, 2 robots/NPCs, 3 source rooms- 53 FBX model files / 78 imported mesh subassets- Measured geometry: 222,057 vertices and 255,458 triangles total- Average: 4,820 triangles per FBX model (3,275 per mesh)- Range: 12 to 48,700 triangles per FBX model- 149 URP/PBR materials- 466 textures, primarily 4096 x 4096 Base Color, Normal and Mask Map textures- 15 generator socket modules and 25 curated runtime props- 500 deterministic seed cases validated; Start/Exit/Key/Lock progression and connectivity checks included- Public C# runtime API, JSON import/export, runtime UI and WebGL support- Colliders included; no rigging requirement for environment modules- Documentation: Assets/TopDownLevelAsset/Documentation/README.md and Runtime-API.md- No external Asset Store package dependencies
