BlockForge
A no-code web app that lets indie game studios, architectural visualization firms, and tabletop worldbuilders generate varied, believable city blocks from a handful of sliders and export straight into Unity, Unreal, or Blender.
indie game developers and small architectural visualization studios who need varied urban environments without manual modeling
- Browser-based generator with live sliders for building height, density, AC units, signage, awnings, and lighting based on a real Hong Kong-style reference kit
- One-click export to glTF, FBX, or USD with per-instance material variation preserved
- Style presets (dense Kowloon, light industrial Tokyo, weathered Mediterranean) so non-artists can ship convincing cities fast
- Seed-based regeneration so the same city parameters can be re-rolled for different levels or scenes
The GitHub repo hit 112 stars by openly exposing 18 generator parameters and a real procedural kit, signaling strong demand from people who'd rather tweak a UI than read TypeScript.
Multiple live procedural city generator products (Unity Asset Store, Unreal Marketplace, Houdini) and a $5.54B indie dev market with 14.54% CAGR confirm a real user base, though this is a niche sub-segment of game-dev tooling rather than a mass-market need.Indie Developer Market 2026: The Complete Industry Analysis ↗Procedural City Generator | Unity Asset Store ↗
Crowded incumbent landscape: Esri CityEngine + Houdini, Houdini procedural city generator, Procedural World Lab for UE5, multiple Asset Store entries, and Cigen for Unity; a side-by-side comparison article on tripo3d lists multiple mature rivals, leaving only a narrow 'no-code UI for non-coders' wedge.Ultimate Guide - The Best 3D Cityscape Design Tools of 2025 ↗Procedural World Lab City Generator (Unreal) ↗
Unity Asset Store top sellers reportedly earn $10K-$30K/month and Procedural World Lab positions itself as a premium UE5 tool, showing indie game devs and studios do pay $50-$500+ for solid procedural environment tooling.Monetizing Unity Assets: Success Stories from Developers ↗
Procedural urban generation is a decade-plus stable need across games, archviz, and tabletop; AI advances will augment rather than replace designer-controlled generation, supporting a 7-10+ year horizon.90+ Indie Game Industry Statistics | 2026 Data Report ↗
Building a Three.js-style web app with sliders is straightforward, but exporting 'varied, believable' city blocks cleanly into Unity, Unreal, and Blender (three different pipelines/SDKs) plus hitting visual parity with Houdini/CityEngine output is genuinely hard for a small team.ArcGIS CityEngine for Houdini ↗