The difference of offline play in Heroes II and Heroes III.

Absolutely, in the second game, you can build a Captain who will oversee the defense, specifically by casting spells!!! Plus, the moat (or its substitutes) in the third game deals damage, while in the second game, it simply delays units and doubles the damage they receive! To this, we must add that in the third game, corner towers appear as a part of the Castle. In the second game, however, the central tower is present in every TOWN (but not a village), that is, like the Citadel in the third game, and the towers must be built separately (left and right), and they will not do anything other than defend the castle...
There is also specific humor associated with the moat and towers in the second game, but "that's not what we're talking about right now."