You have probably seen maps with large spheres or "domes" before - well so has Adam, it seems, as he has created a map, with of course the necessary low-gravity, with five such spheres linked together! And he waves at us in the screenshot, while G.Wynn looks on.
There is a little clipping, sadly, mainly involving this orange-textured dome, but the weapons and power-ups seem nicely placed. I don't know how hard or simple it is to make these spheres (since the file size is pretty low, probably not that hard), but after other earlier maps along the same lines, this can't be called particularly innovative. Still, I can imagine a useful battle taking place here, which is the main thing...