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Terrainizer
Terrainizer is a procedural terrain generation toolkit for Unity. Drop it in, generate a complete landscape with villages, roads, vegetation, and farms, then delete it. Zero runtime cost, no scripts left behind.
What You Get
One seed generates an entire world. Terrain with hills, erosion, and island shaping. Village roads that branch naturally through the landscape. Buildings that flatten the ground beneath them and respect each other's space. Trees, rocks, and grass that follow slope and texture rules. Farm fields that line up along roads. Everything works together, and everything is driven by a single seed number.
Change the seed, get a different world. Same seed, same world, every time.
Real-World Roads
Import actual road networks from OpenStreetMap (optional). Terrainizer downloads road data, builds spline paths, flattens the terrain beneath them, and paints road textures automatically. Use real geography as a starting point, then fill in the rest procedurally.
How It Works
The Setup Wizard installs dependencies and creates a fully configured terrain generator in your scene. Click Regenerate All and you have a populated landscape. Want more control? Run each step individually: terrain first, then roads, paths, buildings, trees, rocks, grass, and farms. Every generator has its own inspector with settings you can tweak.
Built to Be Deleted
Terrainizer is an editor tool. It generates standard Unity terrain, tree instances, detail layers, and GameObjects. Once you are happy with the result, remove the Terrainizer components or the entire package. Your generated world stands on its own with no dependency on Terrainizer at runtime.
Built to Be Hacked
Full source code is included. Every generator inherits from a clean base class with a simple contract: Generate and Clear. The seed system, exclusion zones, terrain sampling, and pipeline ordering are all documented and designed for extension. Add your own generators, modify existing ones, or rip the whole thing apart.
AI Copilot Friendly
Terrainizer ships with AI skill packs so you can point your favorite coding assistant at the codebase and start extending. The skill packs include architecture maps, step-by-step workflows, integration checklists, and validation playbooks. Same engineering standards used to build every generator in the package.
Included
