GitHub - dawid-t/Mesh-Combiner: Mesh Combiner is a little tool which can combine different meshes into one mesh in Unity for reduce the amount of batches / draw calls, making your game more
Combine Objects/Meshes to reduce drawCalls - Unity Answers
Creating in Unity #5: Combining Meshes! - YouTube
Mesh Combine Studio 2 | Modeling | Unity Asset Store
Voxels in Unity: Using CombineMeshes is actually faster than calculating vertices manually. : r/VoxelGameDev