Since it’s a miniLD, I decided to go with my own interpretation of the rules So I made a simple plateformer where you have to switch between 2 different viewport size (640 * 64 and 64 * 640), The game in itself is contained into a 640*640 box.

here’s the 2 different views of the game :

here’s the actual version, only two level available for now, I will use the remaining time to add some more tortuous levels.
Web version
(cursor keys to move / jump, space to change viewport size)