so far, here are some ideas I've had:

if upgrades need other upgrades, maybe show that in some way in the description or something

honestly, I think that the game should start at 5 lanes, because it is kind of jarring when it switches

it could also be cool to see more cross upgrades, like fire cannonball, or maybe minigun + rocket makes rockets launch more often when enemies are close, stuff like that

combo upgrade ideas:

fire cannonball

turret gains an orbital

(unlockable upgrades could be cool too)

other upgrade ideas:

+1 max flower

(will update with more ideas when I have them)

Thank you very much, your ideas are very interesting, I will try now to include what you said in a future update, thank you very much for helping me.

also, if the game is designed for mobile, maybe make a apk download or something, otherwise it could be nice to have a much wider screen lol

Thank you so much for all your valuable advice. They are very useful for developing one of my first games. I'm going to try as hard as I can to do what you said, and bring out an update with more modifications. Thanks again for all your help.

if you want me do sketch out how a fullscreen UI could look, I could

if you make a video it will be the happiest day of my life. i'll be able to credit you in the game. Basically, my game is meant to be on mobile, and your interface idea is really cool, but the problem is that the controls are less intuitive. If there's anything I don't understand, I'd like you to explain it to me in greater depth. Thanks again for all your help.