@: I am not sure this will solve my problem. I am not using child tiles. My “Tiles” are 4x4 squares that when I generate I place a blank tile down with a block to stop movement. I then remove the block and make the center one visible. This gives me a 4x4 area that is usable. I have a trigger box on each edge that removes the block box and makes the “tile” on that edge visible. So my “tiles” do not have an edge area because I was using the ray trace to figure out what is walkable or not. I guess I was expecting the grid to be dynamic as things change in the game.