Very interesting mechanically--I love to see fresh ideas like this. The art looks good, but could be improved with a more specific aesthetic. The central gimmick is very cool and has some unexpected applications, but it feels too limited in comparison to the game's length. It would be neat to unlock a new way to use the gimmick, like dragging the window around to move the character.

My biggest hangup was the bosses. Because they disable the central mechanic, they feel out of place. I also found the final boss to be very frustrating and a huge difficulty spike.