The music had a really nice vibe to it that was fitting. The clicks from collisions were really nice as well.
Visuals were nice! I like how you used the blackboard to display the score rather than a UI.
I was a bit confused by the gameplay and the controls. It took me a while to figure out that I needed to just start hitting the ball - I was waiting to my turn but the AI kept going. A tutorial of some sort would be helpful, especially since it defies the conventional rules of pool?
I'm curious how you did the AI? Interesting how you made the different difficulty settings.