Game Center Sync iPhone 3G

If it a universal app then yes. But if there is a HD version of the same game then no.

Example: Fruit Ninja for iPhone and Fruit Ninja HD for iPad.

How do I know if its universal? What about Temple Run? So if I download fruit ninja for iPhone and Fruit ninja on iPad (Not HD) will they sync?

Universal/Designed for iPhone and iPad is given when you buy the app in iTunes.

Example: http://itunes.apple.com/au/app/sentinel-3-homeworld/id396103539?mt=8

So if I download fruit ninja for iPhone and Fruit ninja on iPad (Not HD) will they sync?

I think so if you use the same app for iPhone and iPad and your game center login is the same.

iPad: Using applications designed for iPhone and iPod touch

I have the same issue when using Logos quiz (Universal) on the iPhone and iPad.

Signed in on both machines, synching to iCloud on both machines, same account, Internet connection.

I am on level 6 on the iPhone but the iPad shows me starting from scratch, even though my acheivements are logged correctly.

Exactly the same applies to Super Stickman Golf (Universal)