It's a very good idea for a game!
This combination of breakout and pinball, two very addictive games, is great! It's a pretty simple concept, but it works! It's unique, it has been executed well, and it is generally fun and entertaining to play! Playing this game, feels like playing your regular breakout game, albeit the ball is pulled by the gravity, there are obstacles similar to those in pinball games (to some degree), and the paddle is a combination of that from breakout and pinball. The gameplay is pretty straightforward, it's simple to learn and master, and it delivers a lot of satisfaction!
Although I haven't had any problems with the gameplay itself, the graphics and audio, definitely need more work, because the combination of placeholder graphics and dead silence, isn't a good one. But I've read from the game page, that this game is still being worked on, and seeing the planned changes, I'm positive that these flaws will be solved!
Overall, I rate this game 4 stars. It's a very fun game with a pretty innovative idea, but the graphics and audio require some additional work.