I love your art style; the palette is amazing, and the concept is great—especially the custom selector, haha.
I also feel like I'm really inside a Game Boy, so you did a great job with that!
However, I think you should explore your gameplay mechanics more. Just walking around can be interesting, but you need to add something extra. For example, you could introduce new elements like running from a ghost, but none of the characters reacted to my presence.
That’s my feedback—great interpretation overall!