I've been playing heaps of matches lately with computer allies. They really are very different to the standard AI, and they behave quite differently every match (Assuming you pick "Computer" in the drop down list of AI strategies). That makes me wonder, is there some algorithm that decides which AI to pick based on the current map? Or is it randomized? If it's randomized then what's to stop it randomly picking the "do nothing" ai files I've got hanging around in my AI folder?