Ridiculously good. My favorite game on the Playdate, and probably one of my favorite games of all time, all platforms included. Great level design, great movement, progression, just overall a great game. I would probably buy it again and replay it if it ever comes to Steam, either with updated colored graphics, or even as is in black and white (it's already freaking beautiful as is, and every tiny asset is super easy to understand, even with only black and white).