Hi there. I would like to add a new Wetlands or Marsh terrain to my personal mod like the one I've seen in various other mods. I'm not sure how to do it though. But before I figure that out I have a question: Will it appear in random generated maps with the existing map scripts? There's not much fun adding a new terrain if it won't show up in game. I'm not very experienced modding Civ4. Thanks in advance.