SceneBlockLibrary
A curated marketplace and web playground where worldbuilders can browse, tweak, and license ready-made procedurally generated city blocks (Hong Kong dense, Tokyo commercial, Marseille weathered) for use in games and pitches.
solo game developers and tabletop/TTRPG worldbuilders who want evocative city tiles without learning 3D tools
- Searchable gallery of pre-generated block styles with high-res turntable previews and license terms
- In-browser parameter tweaks (height, density, lighting, signage) before downloading
- Per-block pricing with revenue share back to contributing artists who upload their own kits
- PNG and glTF exports for tabletop map-makers and game devs alike
The viral open-source generator proves there's appetite for varied, evocative city blocks; the gap is curation, licensing, and one-click output for non-coders.
BuildingGeneratorThreeJS has only 117 stars and 12 forks — modest, not viral; TTRPG worldbuilding is real (Watabou, Ex Novo, itch.io collections) but already well-served by free tools, and solo indie gamedevs are notoriously price-sensitive buyers.GitHub - achrefelouafi/BuildingGeneratorThreeJS ↗Wolrdbuilding TTRPGs - Collection by Strangeite - itch.io ↗
Crowded: Watabou's Procgen Arcana is the beloved free TTRPG city/map generator; Unity Asset Store hosts multiple procedural city generators; Unreal Marketplace has 'Interactive Procedural City Creator' and premium Procedural World Lab. Curation + licensing layer is the claimed gap but competitors cover much of it.Watabou's Procgen Arcana ↗Procedural World Lab | Premium 3D Procedural Generator ↗Interactive Procedural City Creator in Blueprints - UE Marketplace ↗
Mixed: premium UE5 procedural city kits and Unity Asset Store packages prove gamedevs pay for city-generation tooling, but the TTRPG worldbuilding crowd is conditioned to free (Watabou, Ex Novo) so monetizing that half is hard; curation-as-value is unproven for stylized 3D blocks.Procedural City Generator | Level Design | Unity Asset Store ↗Home | Procedural World Lab | Premium 3D Procedural Generator ↗
Procedural generation is a durable trend, but text/image-to-3D generative AI is rapidly closing the gap on 'evocative city blocks' and could commoditize curated blocks within 2–3 years.Procedural City Generation in Three.js — Grokipedia ↗
The generator (TypeScript/Three.js, MIT, GLB kit export) already exists with 18 exposed parameters — building a curated playground on top is feasible, but marketplace + licensing + multi-engine export pipelines (GLTF/FBX/Unity/Unreal) plus curation pipeline are non-trivial engineering.GitHub - achrefelouafi/BuildingGeneratorThreeJS ↗