I liked it! The only thing I would like more about it would be if there were a way to get past a level if you can't win it. You can buy an atomic sausage for the ultimate in winning the level. There are a lot of options for purchase with accumulated game points that haven't been released on my game, maybe because I don't have enough points, since I had bought two atomic sausages at different times. It looks like you can replay a level to get a better score, although I have not tried that yet.
For me, it has replayability, and I'm glad I bought it, even if I got it on a half-price sale. I think it's worth the full member price.