I've played 30-40 games with Random 5 and 6 player systems and have never found a desert planet that was randomly generated. I've seen random Terran and random Ferrous (TEC and Vasari homeworlds) but never Desert. Is this a bug, or do I get incredibly unlucky? Sure, new planet types are nice, but just once, I'd like to play a game as Advent and be able to colonize a DIFFERENT Desert planet.
-Gill