Procedural Mesh Tutorial, Part 1: Mesh Basics - YouTube
Unity mesh generation: Simple Mesh… - Martin Ritter | DMA
Procedurally generated meshes in Unity without garbage
I did a map creation tool directly in Unity, did this map in 5 mins. It's mesh generation, I just need to finish the tileset editor and layer system (for shaders). :
Programmatically Generating Meshes In Unity3D | Kobold's Keep