Really cool and fun little game! I had great fun playing it!
I think that everything about it is really solid! I liked the music and the art! And I also really liked the interpretation of the theme!
I even managed to get up until the 5 round!
Though I do have some critiques. First of all, I didn't really understood what was the goal of the game. From what I did understood, the player is trying to get to the final round (round 12) and pop the big firework? To be honest I wasn't really sure what exactly was my goal.
Also I another thing I didn't really understand was how the shop worked and how the launches left system worked. For the shop I felt like it showed up sometimes, while others it didn't. I am not sure if that was the intended behavior or I just didn't understood correctly. I though it usually show up after every round (or every time I launched my bombs), when in reality it showed up only sometimes. And as for the launches system, this is something that I really didn't understood at all. As I said I lost at the 5 round, and I was little bit surprised as to why I had lost (then I realized I was out of launches)
In other words, I feel that the game would have benefited a lot from a short tutorial in the start. Explaining the basic systems. Though I totally understand that, that was not probably possible due to the short time frame. Especially taking into consideration that you made the game alone! (Which is really impressive!)
I would also like to add that I think that the numbers that show up when you launch your bombs could be a little bigger. I felt that they were quite small and didn't give as much of that "pop" feeling they could have!
Regardless I think this is a really cool little game! I had great fun with it and I can really see the great amount of work that was put into it!
Great Job!