Damn first of all, thanks a lot for the bigg feedback, I'll try to say something about everything you adressed but I'm sorry if I forget a certain part.
The visual upgrades were something I experimented with on the last day because a playtester asked me, and I kid you not I spent an hour or so testing out representations for the spear and bomb tower. But every time I found soemthing it felt rather off, so in the end I just went with the corner thingies because of lack of time. It is definitely something I'd change after the jam though!
I do agree that the start of the game is rather slow, I feel like this has to do with the interest cap being +10 and it just being too easy.
Definitely have been seeing that in others comments so I've already written that down as something to start experimenting :).
The lightning actually has an animation if you look really closely, but it's interaly my bad that it's so unnoticable. It's litteraly just the ball glowing, so it's super confusing indeed.
More enemies is the first thing I'd have added if I had more time. I'd have never thought about making things come from the beach before until you just said it, such a cool idea! Initially it was just meant as decoration, I was even gonna draw little crabs for it but I didn't get to that point..
As for the positive points, I'm reallt glad the optimization was good. I don't really know what I did but I guess it did something good haha. I'm glad you enjoyed the core mechanics of the game. It indeed spikes at 25 (because that when enemies litteraly double) so 25 is actually really good.
I'm sorry that there's not an android version. I had thought of doing more than HTML, windowds and Linux but didn't come to that. I feel like it wouldn't have taken that much effort if I look back at it now, but oh well.
Thanks for playing and leaving such a great in-depth comment! 🫶