HoMM3 HD is a mod (add-on) for the game Heroes of Might and Magic 3.

This is only for areas without castles. The chance that there will be more than one such area on the map is small for most templates. Where does this "logical" figure of 10% come from, other than "take 100% and divide by the number of castles + neutrals"? And what about the fact that areas with castles have already occupied most of the map? We've been playing with these castles for ages, but no – HD+ came out, and suddenly it's too much.