Interesting idea and overall the realisation is minimalist, but effective. I guess it takes some time getting used to the controls, when all the paddles move either clockwise or counter-clockwise. I also liked the easy installation (or the lack of it). Unfortunately there was a problem with the frame rate, the game ran very slowly and this made it difficult to move the paddles smoothly.
I'd like to invite your game to our Game Development World Championship, we happen to have a class for jam games!