I'm planning to add an entity API to the game, but I just have to make sure it won't break anything first and interfaces properly with the way the rest of the game is coded.
Level 167 is loosely based on the world of Shoujo no Shuumatsu Ryokou. It's an industrialised world brought to ruin and left in that deteriorating state for thousands of years. Somewhat of a nuclear wasteland almost. The dust particles in the air are supposed to be reminiscent of nuclear fallout and the ash region of Morrowind.