I put this together in the last few days. It is based on and builds on RevEng's adventurer sample. You can walk around 255 different screens on the map, and there are currently only 15 unique screen definitions. There is nothing to do in this demo but walk around.   There is also no collision detection so you can walk through walls. If you stay with the openings the screens do connect properly. I don't know how to do collision detection with the background and haven't tried yet. I'm als