Terra

Terra is an infinite procedural terrain mesh generator that allows you to quickly create terrain both visually and programmatically. Customizing the procedural generation pipeline is simple yet powerful through the use of Terra’s generation API. Any generator created visually can be implemented programmatically allowing you to tailor generation to the specifics of your game.
If you’re looking for a procedural terrain generator that allows for an easy setup while still featuring complete programmatic customization, Terra is your asset.
Documentation
Key Features:
- A node/graph editor for easy--- programming-free generation
- Multithreaded generation
- Uses a Mesh rather than Unity Terrain for lower level customization and optimization
- Heightmap-free generation
- A feature-filled procedural object placer that places prefabs based on height, angle, and random probability
- Live in-editor terrain previewing
- Node graphs are saved in a .asset file and can be shared/imported across different computers
- Fully programmable generation pipeline API
- A material editor that stamps textures based on height and angle
- Procedural grass placement - An event system that reports different stages of execution allowing insertion of custom code
- A chunk-based infinite terrain system that caches previously visited chunks
- Compatibility with procedural material shaders (such as MegaSplat’s)
- In-editor terrain previewing
- Deferred collider generation for chunks that are outside a set radius
- Extensive documentation