I like the idea for this game, yet the physics don't feel very realistic at all. The ball doesn't roll far even on flat surfaces, it doesn't bounce that well off walls (so you can't use them to your advantage), if you bounce against the wall and it bounces down on the ground, it rolls backwards, etc. Also didn't like that choppy scrolling preview of longer levels, but then I found the option screen and realized that could be turned off, fortunately.
The level layouts, the types of ground, etc, all of that is great, I just wish the physics were a bit more dynamic, more bounce, longer rolls (seems possible for the ball to stop even on rounded edges btw, if you time it right), more possibility to interact with all facets of the level, bounce it off edges; walls; bounce across water, etcetc. Love the idea and level design overall, so if there's any chance for a sequel/improvement, I'll be awaiting it eagerly! Also, would be nice with faster transitions between menu items, and a camera that follows the action (ex lets you hit the ball higher instead of going out of bounds, and zooms out to capture the entire level as you do). Keep up the great work!