What iOS devices will play Goorusoft games?
iPhone 4S, iPhone 5 series, iPhone 6 series
iPod touch 5th generation
iPad 2nd, 3rd, 4th generation, iPad Mini series, iPad Air series
Which iOS version is required to play Goorusoft games?
It’s highly recommended that you update your device to the latest version of the iOS. You can update your iOS for free by connecting your device to a computer with iTunes installed.

METALWARS 3

Does METALWARS 3 work with iCloud? How does it work?
If you have iOS 6.0 or later installed, and iCloud set up, your METALWARS 3 game saves will automatically be saved online each time you play (while connected online).  iCloud will also allow you to share save files between iOS devices which are set up use the same iCloud account.  For information about how to set up a free iCloud account, see Apple’s iCloud Support page.
How do I see my Achievements and Leaderboard rankings?
You need to have an active Game Center account, and your iOS device must be running iOS 6.0 or later. There are two ways to see Leaderboards and Achievements:
Before touching the “START GAME” button in the main screen, touch the Game Center icon, then pick Leaderboards or Achievements.
Or you can choose Game Center from the iTunes home screen, select “Games”, and choose METALWARS 3 from the list.