BTW MapMagic is on sale too ! The thing is that Voxeland generates a new chunk, not just loads it. However, generating is done in a separate thread, so it does not affect the performance - only the final stage, setting up the Unity mesh happens in main thread and require some time depending on the chunk complexity. Loading a ready mesh can remove this lag, but the size of the data will be increased significantly - while Voxeland just stores the compressed block data (it's about 4 KB per chunk) SECTR will have store all of the mesh data (about 350 KB per chunk). 1 square kilometer will take about 1.2 GB of meshes only, and 10*10 would be 120 GB. I guess SECTR can handle that, but the question is if you are willing to make the size of your game that big.