Very unique concept, I really liked it! I loved the difficulty, felt fair, while also took quite some tries. Only beat it till level 9, though.
The execution is great, the gameplay is fluid. I just wish the respawning of the white ball was faster. Also sometime it feels like the 8-ball gets hit stronger than it should be, but that might be just me.
The fact that this is the most I can nitpick really shows how good the game is!