Why "hide" the continue button in the left bottom? It's not like I didn't find it but small things like that make a game not so enjoyable as it could be.
I like the music though. Pretty neat for playing it in the morning with a cup of coffee. ;)
Oh forgot to comment on the game: Great game, rather easy (but thats good, not frustrating) and short but still fun.
Can't wait for Factory Balls 3 to come out some day...