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Recently I was playing a game as a race of humans turned completely mechanical. Think Cyclons or Borg or Terminators (but much more advanced) and I suddenly ran into a small "snag" (in the sense that it ruined the whole atmosphere of the game) because my robots are oxygen breathers. WTF? Why are my robots necessary limited to oxygen worlds? Anyways, is there a way for me to be able to mod it so that I could have a special trait (similar to Mechanoid or what have you) to allows a race to breath any atmosphere type?