Assault

Yes, you can come up with tons of bizarre ideas, but I would prefer the arena objects from Heroes 5. Besides, such large cities take up too much space; it would be difficult to place a large number of them on one map. Fortresses in the style of my hometown, Saratov, from the 16th-17th centuries – that's acceptable. I'm currently working on a fortress map for Heroes 5; I'll upload it to the forum when I'm finished.
Sincerely.