[How to play]
1. Tap to fire.
2. Shoot the gray area in the wheel from the white hole, and do not shoot the red arc, it is defense wall.
[Special]
1. You can install this App in different device, then when you login in Game Center, the score will be automatic synchronization.
2. If need, Please tell your friends to search this app with the keywords: "InAttack" or "inAttack" in the App Store or iTunes Store.
3. If you can not run this App, try to shutdown some other Apps which run in background, and then try to run it again.
4. How many score can you get, 8000 or 10000 or even more ? So just to play it, and do not forget to play with your friends together.