It's koth. What's the point of any koth map? What is the point of your question? The inspiration went like this: I turned everything in cp_granary into chrome for amusement. I noticed how cubemap reflections look good on curved objects (the silos) and crap on everything else. Decide to make map with lots of chrome spheres. Determine that "moonballs" is a fun/catchy name for such a map.