I know this may sound a little stupid, but it's really true. The fact is that Jazz2 isn't that hard to make. It just takes a while. It's a simple DirectDraw program that takes the tilesets and places them on a few 2d array's. The back layer (or 2d array) is displayed first. Then comes the second, overwriting the first in the appropriate places and so on. Then, the animations are displayed by opening the animations file in the jazz2 directory. The animations are displayed whenever the fourth layer is displayed. It's really that simple, besides the collision detection.