Simple yet effective style. The physics challenges were fun and I like how you introduced new mechanics, like the breakable blocks, through a level where the goal was behind a breakable block. Having levels like that to introduce new mechanics like the yellow circles or other obstacles could be great too. Also level 29 was great at giving more than one way to solve it. One thing is on level 26, it is a bit difficult to get the ball onto the moving rectangle. One time I got it in a few tries, then when I checked the game out again it took a while. Maybe more platforms shapes, like a bowl shaped platform, can make it easier.