woderfully original
This was delightfully original and it worked so very very well. The controls were good, the setup was fantastic, the skill tree is a hoot, and the throne room is a nice cherry on top. The different tower types are also challenging and fun to plan around. The only thing I would add to this is the ability to assemble waves of different types and numbers of monsters instead of one wave over and over again.
I anticipate you making a modern day version of this were instead of an evil mage, you play an African warlord or something similar trying to raid different villages and military bases that have modern-themed tower defenses.