I really appreciate your detailed feedback! It really helps to know about those bugs so I can fix them
I’m working on a longer and better version of the music you described
And yeah, the overworld is not fully fleshed out. Eventually you’ll find many little rooms, puzzles, and mini games to explore and people to talk to in those doors
I’m still trying to think of a better way to do the player’s health indicator. I’ll try some other things to make the sprite more clear.
What I’m also looking into is seeing if I can hack it so the palette changes. Not supported in GB Studio but I bet it’s possible