In the sky, you have to use all your differents Weapons to destroy many waves of Flying Ships!
Try to find the weakness on your opponent to bring him down quickly and be able to defend this fantastic tower of yours! In the meanwhile, you will be able to get a score by your defeating airships.
So, why gaining gold? No money, no candy! You can upgrade your tower, weapons, skills each of them with unique feature.
Now, what are you waiting for? Try it and you won't regret it!