I like the idea! I didn't read anything before playing, so switching worlds was a nice surprise! I do agree that a steeper difficulty curve would've been nice. But not bad!
Thanks for checking out my game. I did thought of a difficulty slider but didn't had enough time as I've wasted my time thinking of ideas. I'm still a new and learning game dev and your idea is truly helpful. Again, thanks for checking out my game. Have a great day :)