Hey! Finished the prototype in 11 minutes! :)
I'm planning to embark on making a gnorp-like soon, and that lead me here! I really enjoyed playing this, the visuals are nice and the progression feels good.
Most of my criticism is about quality-of-life things. It felt like at the end of the first music track (or the end of the loop, if it's looping) the music volume jumped up?
There's not much indication as to if my wizards or artillery are having more impact on my booms.
The observatory felt slow. 100 science was a low cost for where I was at in the game, so why can't this just be automated? Why do I have to remember to click it every 20 seconds?
The firework launcher is pretty small! And all the hover UIs are massive!
Overall, the games on a really good path and I wish you luck with it!