game-centerinfinity-bladeiostechnical-issues
I was playing Infinity Blade on my iPhone 4 and I selected game center option to look at my achievements and when I push the "Done" button, the screen went black. I exited the app and went back it is still black.
How do I fix this issue and return to the game?
I did some searches, and it looks like this is a known issue with the game. The suggestion that the game developers have is "hard resetting" your handset. This is like doing a clean reboot of the system.
I don't know what platform you're on exactly, but if it's an iPhone, the general directions for performing a hard reset are to press and hold the "Home" button (on the front of the phone) while you're also pressing the "Sleep/Wake" button (on the top of the phone). After a few seconds, you'll see the Apple logo pop up. You can let go of the buttons at this point. It may take a minute or two for the phone to come completely back up again.
If that doesn't work, you'll just have to wait until the next update to the game. This was scheduled to be fixed in the Christmas update, but it didn't make it in time.
Cut the Rope HD for iPad does have Game Center: you noticed the Game Center welcome notice, which indicates the app has implemented the Game Center API, but you can also confirm an app has Game Center by looking for the Game Center icon on the app's App Store page:
As of Cut the Rope HD 2.0 (released October 25, 2012 in the US), Game Center is integrated directly into the game and you can find things like achievements in the options menu, just like Cut the Rope Experiements.
Prior to the 2.0 release, being an early Chillingo game, there's no way to access Game Center features in game. The Crystal you noticed is for Chillingo's version of Game Center, aptly called "Crystal".
Instead, use the dedicated Game Center app, select the Games tab, and find Cut the Rope HD there: you'll find both leaderboards and achievements.
Best Answer
The reason the app is still black is likely because it is still running. Try exiting to your Springboard (home screen) and double-tapping the home button, bringing up the multitasking bar. Find Infinity Blade, and hold down your finger on the icon. They will start to wobble, like you are rearranging apps. Press the little minus icon on the Infinity Blade icon - this quits the app. Tap anywhere on your home screen to return, and try launching Infinity Blade again.