Disable multiplayer on Game Center - game-center

I'm have an ios game with GameCenter. In itunesconnect game-center is enabled. There are 15 achievements and 4 leaderboards submitted. The game does not provide for multiplayer. But it appears in Game Center app. The app is displayed in the tab "Friends" in "Games in common".
How i can disable a multiplayer compatibility?

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Xamarin Forms - libvlcsharp fullscreen mode

Is there way to play video in fullscreen mode in Xamarin Forms with library - libvlcsharp ?
I'm connecting to ip camera, the view is fine but not in fullscreen.
I made code for double tap detection and now I'm looking for method to do it in fullscreen by this library
Install LibVLCSharp.Forms 3.1.1-alpha, it contains a media player element with built-in support for multiple aspect ratios.
Will be released in LibVLCSharp.Forms stable soon.

Sony D2203 and google cardboard

I have a sony xperia E3 (D2203) I can build the demo for google cardboard and load the apk in the phone. When I open it it does starts, I see a menu with [reset] [recenter] [VR mode]
But the movement tracking is not working.
There is also a settings icon, when I click it leads to the cadboard app in google Play store. and In there I find out that my device is not compatible with it.
Can I work with this phone without this configuration app ?
Google Cardboard needs a built-in gyroscope to accurately track movements. Sony D2203 doesn't have this hardware, so it won't be much fun playing with Cardboard.

LibGDX - Gwt - Sounds Don't Play On Mobile Browsers

I developed a game in LibGDX.
I added some sound effects in mp3 format into my project.
When I deploy my project to HTML, browsers on PC play those sounds, but browsers on mobile phones don't play them.
How can I solve this problem?

Opt-out from Supporting iPhone 5 Layout

This sounds to be a weird question, but I would like my App not to support iPhone 5 layout at this moment.
I know, to support iPhone 5 layout, I have to add a Default-568h#2x.png as Launch Image, then the XIB will be resized and supports iPhone 5.
The current issue is, the layout we currently have does not have iPhone 5 4-inch layout. If iPhone 5 4-inch layout is enabled, the buttons are disabled. After discussed with co-workers, we decide not to support iPhone 5 layout at this moment, i.e. we prefer to leave black borders on top & bottom of the App. Is it possible to submit an App without Default-568h#2x.png ?
Yes, that's possible. The Default-568h#2x.png is just a flag to trigger iPhone 5 support and we've successfully submitted fixes to Apps without adding the Default-568h#2x.png file. Apple will currently not reject your App update for not supporting iPhone 5.
Of course you should update the App over time and I would not be surprised that Apple will change this policy in the future, especially for new Apps. But for now you're okay!

Game Center in iOS 6

I downloaded the XCode 4.5 + iOS 6 SDK Preview version, and ran Game-Center integrated app.
With prior versions, when I didn't enabled the game center in itunesconnect and ran the app, the message was shown as "This game is not recognized by Game Center".
But in iOS 6, Game Center login dialog was appeared even if this is not game center enabled in itunesconnect.
Does anybody know why this is happening?
Try to logout from the Game Center app and delete this app.
A lot of iTunes Connect related issues are solved by deleting the app.

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