As the title says I'm wondering if it's possible to turn one of the planets around the players home star, into an extreme planet. I've tried looking in the xml's but I can't find anything related to extreme planets or planet type.
I know to edit the planetDef.xml, but I'm not sure what to change the PlanetType parameter to. Maybe this isn't possible yet or at all, but I really hope it will be at some point.