Great point! Thanks! I will check all of that out later! I have actually deconstructed all my pieces into single files and I am working on building a level using the Snapping in unity. I hope it fixes the issue with the cracks. I don't quite understand what you are talking about with the lightmap shader.. Do I bake it on each of the individual pieces in blender or do I bake it in unity? If I baked each individual peice in blender, I think the lightmaps would end up looking strange because they were mapped individually.