Orisuji: A paper maze you solve by folding your iPhone Duo

Hi Product Hunt, I'm Adrien. I've been really into origami for the better part of the last 20 years, so when Apple announced iPhone Duo, a phone that folds like a book, I wanted to make a game where folding the phone is the move, not a game that just happens to run on a folding phone. Orisuji began with a question: what if you could see through the left screen? Unfolded, there's a paper maze on the right page and a sheet with holes on the left. Fold the phone and the pages become one maze on the cover screen, its paths bridging the holes. Unfold it and the left page lifts away, carrying whoever stood on it. There are 69 levels in six worlds, with keys and doors, sakura switches, crumbling floors, windmills, two cats and a fox, all folded paper. It's designed for iPhone Duo and plays on every iPhone and iPad, where you fold with a tap or a pinch. $4.99, no ads, no in-app purchases. I'd love your feedback: which level stumped you, and, if you're playing on a regular iPhone or iPad, how folding with a tap or a pinch feels.