Deterministic procedural city generator for Unity — roads, traffic, day/night, weather and performance tools for URP, HDRP and Built-in.Requires the glTFast package (com.unity.cloud.gltfast) via Package Manager for demo model import — install it from the Unity Registry if it isn't already in your project. The core generation and rendering code has no compile-time dependency on it and works with any prefab catalog. Tested on Unity 6000.0.32f1.DK Procedural City generates a complete, playable Unity city from a single seed. The generation core is fully deterministic — the same seed always produces the same roads, blocks, zoning, plots and buildings — so it's safe to test against and safe to ship in a shipped build.On top of that core sits a full rendering and runtime layer: catalog-driven building prefabs, live traffic with signals and curved roundabout lanes, a pedestrian crowd that stays on the sidewalk and crosses only on a red light, a day/night cycle with lit windows and street lamps, weather (rain with reflective puddles, snow, fog), and a performance layer (mesh combining, GPU instancing, distance culling) proven on a 500x500, 690-building stress test.Everything is customizable: drag your own building, vehicle and prop prefabs into the no-code catalog — nothing is hard-wired to the bundled demo models. A toolkit editor window exposes presets, seeds and generation settings without touching code. Works with URP, HDRP and Built-in from a single codebase.Suitable for city-builders, traffic/driving games, open-world backdrops, architectural visualization, and any project that needs a populated urban environment without hand-placing every building.Features- Deterministic generation: same seed = same city (roads, terrain, blocks, plots, zoning, buildings)- No-code prefab catalog — drag in your own building, vehicle and prop models- Live traffic: signals, lane-graph navigation, curved roundabout lanes- Pedestrian crowd: sidewalk-only NavMesh carve, signal-gated crossings- Day/night cycle with lit building windows and street lamps- Weather: rain (reflective puddles), snow, fog- Performance: mesh combining, GPU instancing, distance culling, shadow-distance clamp- One-click stress test and render-cost report (draws/tris/materials/FPS)- Export: top-down map PNG, and prefab bake (keep-instances or combined static mesh)- Runtime generation API (Generate/Regenerate/Seed/Generated event) plus a toolkit editor window- Full Edit Mode test suite included (300+ tests) for generation correctnessSupported render pipelines: URP, HDRP, Built-in (single codebase, auto-detected)Supported OS: Windows, macOS, Linux (Editor); target platform follows your project's own build supportUnity version: 6000.0 or newerDocumentation: QuickStart guide included in the package (Assets/DK.ProceduralCity/Documentation/QuickStart.md)AI assistance (Claude, Anthropic) was used throughout development for code generation, refactoring, test authoring, documentation and marketing asset creation, under human direction and review. All functionality is validated by an automated Unity Edit Mode test suite (300+ tests) and manual in-editor verification.
