In the 3rd part, if you destroy a town completely, i.e., destroy all buildings, you get 5 ghosts/specters, which multiply directly in battle, increasing based on the percentage of damage dealt.
There is no such thing in the third part. This is probably referring to Wog. And Wog is not a game, but a tool for modifying it.
За то что нейтралы не бегают за единичкой, для меня это уже стоит того