I must confess, my original post on optimization of game levels was, well, incomplete and inaccurate. Optimizations were not fully complete. There were a lot of T-Junctions that were left behind after optimization (, Sandeep was probably the only person to catch that). However, I managed to remove those too. They were causing a lot of problems with A* navigation and I am glad they are gone! So here are the updated screens. Some extra level geometry has been added so the screens might not look exactly the same as the earlier post.
The updated scene (Doofus 3D).
