Just one little suggestion on the doors. If I remembered it right, it was pretty hard for players to notice the entrance to the next room when we were playing the game during class. I do think it is because the way doors look is so different from other parts of the architecture: the doors are simple and small and frankly speaking it is nothing more than a hole on the wall. I wish they could be somehow exaggerated and look nicer as the rest of the 3D model looks so fantastic!