The physics is implemented well, and the moving ball adds some needed variety.
Could use a few things to add more fun:
- More variety. Most of the level is the same width so its mostly just the same motions. Needs more "enemies" and variations in the track.
- Player decisions? Like upgrades, different paths, etc.
- Some areas to get use to the physics. Early areas should be more tutorials, like adding walls / wider paths.
- Checkpoint system. Far too punishing to fail toward the end.