Solid environment good music and decent gameplay
Good atmosphere, needs work
I really understand what you were trying to do with the game but the shortcomings of it just make it unplayable. The idea is basic but does have quite a serene feeling. I loved the music, really just a calming feeling. Still the game has got a lot to hold it way back.
In one of the levels, going down an elevator while having the camera "down" made you die without any point.
Without any way to tell what keys you have, its hard to know "Did I pick up that key back there?"
Adding in some height control for jumps based on how long you press down would give a lot more to controlling the frustration of the player (if possible). That also brings up another point. Elevators moving faster than falling means that occasionally it falls faster than the ball, the ball loses the hold, and falls to its death while still on the elevator.
Adding a pause button that doesn't pause enemies (or is really necessary in a game with no real timer or danger when not moving) makes the game feel sloppy and rushed; similar idea with adding static enemies that don't do much.
The game isnt anything innovative and it doesn't try to be, but even still, make sure that the game is absolutely playable before bringing it forward, you'll get a much better reception.
super mario rawest forest music is all i can say