The swinging ball feels really well done; the physics here are very natural and feel right, and that's great work! However, there are a few issues that it would be worth working on. The screen is very small -- it's the correct resolution, but it really ought to be zoomed-up by default. The ball knocks over buildings well, but that doesn't seem to be enough; I couldn't get off the first level! And I think it may require the mouse to get started? I couldn't work out how to move on from the start screen without clicking, although maybe that was just my mistake? Nonetheless, there's the core of a great idea here, especially if everything else can feel as expertly done as the swing physics, I think.