This game is a really creative concept and very fun to play. I think it's the most creative game I have played so far in this jam. The only feedback I could offer is that it might be nice to have sound effects for swinging on the pendulum, releasing from the pendulum and flying through the air. And if you wanted to make it really hard you could make the ball change in size throughout a level so that the player has to time when they go through a narrow gap.
I would love to see more of this game after the jam.