I really like the tutorial, which is missing a lot in some games! I had some text bugs on GB DMG, but nothing too bad. I had never seen this switch of plateformer and top down mode, it's really interesting, and there are a lot of ideas to exploit on this concept, bravo for having thought about it ! On the other hand, it's impossible to pass level 9, I understood that you have to bounce on the moving platform at the top, but it's impossible for me, but maybe I'm bad :p Bravo !
