Wow, this is the most boring tower defence game Ive seen. The game dynamics are just not engaging. Its not that it is too easy, the difficulty level is reasonable. It is just that the predictable sequences of evenly spaced enemies of exactly that same type make it really lame. I guess thats why they included a fast-forward button. Think about it: any game so boring that you want to fast-forward through it might not be worth playing. The designers should have realized that when they were adding this feature, it was a red flag. If you got a movie that you had to fast-forward through large sequences because it was too boring, would you consider that a good movie? Dont get the impression that fast-forwarding through the boring parts alleviates the problem. Even then, it just doesnt feel like an entertaining use of my time. I wont say its not worth the money, because its not expensive. Apparently quite a few other users like it based on the reviews. I just thought Id add my perspective. Having played quite a few other iPad tower defence games, Ive never played one that I found less compelling than this.