interesting concept, loved the different kind of interactions with the environment between the character and the ball!
it sometimes feels a bit clunky to use the ball, but overall I liked the mechanics.
Loved the minimalistic style and music, very fitting!
One small thing, I have naturally started using WASD for movements and A and D are correctly mapped for left and right, but W is not mapped for the jump, so it took me a while to understand that you were supposed to use the arrow keys instead, haha