This is such a unique idea! Really fun game too, although I kinda wish it was a bit more lenient (at least at the start).
I also can't stop thinking about the lore/mechanics of this world. The tower is on a quest. Not its occupants, the tower itself. And it's trying to avenge its family, so this isn't a unique magic tower, there's more, this is common. That just leads to more questions.
...
Are the castles of this world built out of people?