In the tutorial part, I'm not sure what I did, but I can't close one of the windows. It's dark and I can still play, but it has this overlay on top. I don't know what I'm doing wrong. Oh, I figured it out. If you don't close the first pop-up right away and a second one appears, you can't close it anymore, and the whole game stays kind of dim, as if that first overlay is still there. btw if you get to this corner here you get stuck.
I like how it has this vibe. It has a mood you can feel with that music in the background.