Super fun 3d platformer. The controls were a super floaty, but it also enabled you to travel very long distances quickly while in the air, which helped a lot with getting around, and gave a great sense of speed to the movement. I appreciate having controller controls.
The room was designed pretty well, and each coin felt like a nice little mini challenge to get to. The one inside the green rectangle with slanted walls especially made me think of it as a nice isolated platforming challenge within the larger level, almost like a Mario game.
The cannons added a fun element of getting around. At first I wished you could enter it from the yellow portion, like someone else mentioned, but I started to appreciate the platforming element of getting in them as its own challenge.
I ran into 2 bugs - getting stuck between a slanted and upright book, and having a canon launch me through the wall into an endless void.
Really fun game, great job!