I tried using it, but I don't understand what it wants me to do! It says scroll, but when I do it just zooms in. Which is the same as clicking? I tried scrolling to the left but that just moved me to where I am now.

Love the idea, but strange UX.

Edit: tried it again and I think the problem is that there's no feedback during scrolling during transition screens. When I scroll, I expect it to scroll with me, not go on its own path. So by the time it's possible to scroll again, I already tried everything and gave up. Made more confusing by the instructional text disappearing between transitions. Give a little bit more feedback during those transitions and I think the problem goes away.

Scroll used for discrete steps (especially when the transitions are animated) is very frustrating and confusing. Would be much easier to use this if you had to tap (mobile) or press a key (desktop) to initiate a transition.