New Maps by Aphasia[CM]
This map features some very unique gameplay... 2 teams compete in a mixed-gravity environment for control of 4 alien artifacts that they must excavate from a digsite outside the base. Spacesuits must be worn at all times when working outside, or the environment will kill you rapidly.
Custom sounds, graphics, models, and skybox are all used to really sell the feeling that you are no longer on planet Earth. There's even a curve to the lunar surface.