Hello! PlayerXT here, and I just tested your prototype!
Since this is a pre-pre-pre Alpha build, I won't even talk much about the game's technical bugs and weird things, lol. But I must say that I really liked the game's art style and the way you used colors, and I can already see the game's potential! If well thought out, it could become an extremely fun game!
So, if you're going to continue this project, you can be sure I'll keep an eye on it, and whenever I have some free time, I'd be happy to play it and share some ideas!
Oh, and just one tip: I'd recommend adjusting the background colors a bit or creating a parallax effect on the black background to avoid confusing the player about where they can step.