Ooh I enjoyed that. It felt quite 'neat', at the same time as having that bitsy-surreal feel, and even though there wasn't particularly a 'reason' or way of predicting what tiles did what on what screen without trial and error (I don't think?). Not sure I'm explaining that well, but it meant it felt interesting/puzzling/rewarding without being really frustrating. I think because of the neatness of the design, text & concept. I wonder if this would be possible in a longer more complex game or not?
(Also I got the 'normal key ending' last and now wondering what that says about me! Probably actually just that I don't like leaving a screen with anything unexplored, heh.)