Congrats on finishing the jam! I got as far as becoming a Jump Master - unfortunately I was not the chosen one.
I think this is a really smart and simple game. I really liked the puzzle mechanics and collecting the canon balls to help solve the rooms. Even if you knew how to solve a room too it required some good reflexes which was nice.
The art was simple but really communicated what was going on well. And the music was very arcade-y.
I liked being able to chain the canon ball around to move around the levels. The flappy bird level was fun :) The interactive tutorial at the beginning was really well done.
I think a place for improvement is in the controls. I was using the gamepad and using the joystick and a lot of the time when I was using it to jump around facing into the diagonals, I would release the shoot button and at the last moment the joystick would flip direction and instead of moving diagonally I would move horizontally or vertically. This is why I could not clear Jump Master. Would be nice if on fire it kept the direction when it was clicked? Or maybe I was just doing something wrong?
Otherwise it was very well designed! Great job!