Surprisingly, weather could happen in building or maybe even a cavern, even in real life. This is because as water rises due to evaporation, it naturally cools as it is taken away from the heat source, and then condenses (when at a low enough temperature) to form rain. Thus, if the temperature at the top of the cavern is low enough, or the building high enough, rain and other weather patterns can form. Perhaps there is another race (titans of greek mythology, possibly related to kran) up at the top of the huge cavern that is keeping things plenty chilly enough? Fog could also form if the \"titans\" came a bit lower or became a bit more powerful. I also think that cyclones, thunderstorms and hurricaines should happen in game. It\'s just the thought of all those beatiful buildings, characters and items getting sucked up into the huge whirling vortex of dust that makes my mind up. *laughs maniacally*