It's a very clean looking game, and I think it looks really good for using just primitive 3D shapes. The requirement to roll yourself off ledges to change which face is up is a really interesting mechanic, and it adds a new level of risk to the platforming. I thought the acceleration felt a bit slow, but even then all the levels felt satisfying to play. I absolutely struggled with the 4th level, so I was glad to see your comment about that!