I like it, I spent like an hour completing all the levels.
It is easy to understand and fun. It has a simple visual style, but for some reason, my PC heated up a bit.
I think the last two levels are quite large and a little frustrating.
There are some aspects I think could be improved, for example, the camera sometimes gets too close to the ball, which makes it hard to calculate the jump or know what you are doing. Also, when you are the smallest ball, the movement's sensitivity makes it difficult to perform more precise tasks, such as adjusting the barrel.