This would normally go in its own thread, but at this point, meh.

The white is basically "Layer 0" as I call it, as not to confuse it with the lower tile layer. Anyway, it's there for the parallax background, which is defined in the Tileset. If you're not using a parallax background, fill in the lower layer completely with terrain to cover up Layer 0.


The layers are a bit strange at first since they all share the same tiles, but generally the lower layer is the general terrain, like grass or water. The middle layer is for doodads like flowers,tufts of grass, and rocks, stuff that decorates the terrain. The upper layer is usually kept for trees, though trees can go on the middle layer if you want a tree to be "behind" another.