i liked the visuals but there wasn't audio for me.
congrast as for the first godot game.
the gameplay was fun and simple but that's why it's short(for game jams it's kinda good i guess)
also you can change the buttons in godot at the theme override option
and on itch you can enable full screen button (i think it's under the uploaded files somewhere)
i am not a musissian but for game audio i used this vide
and i use this websitte for the sound effects(i think it's good for a more retro style games): https://sfxr.me/