Thanks a lot for feedback, I am glad you liked it!
It might feel like a full game but it should be noted that we made it in a team of 2.
The art was a bit of an issue for us, that is true. But neither of us are into art creation so we had to stick with free assets we could find.
It's a pity that the progression is not noticable much because the upgraded fireworks are really cool! You can try to use the special cheat button to get more money in the shop if you want to see those fireworks.
Cheers, happy new year!