Is it just because it is so a new technology or because developers think it's only for universal apps? I would love to have more of my save data saved to the cloud, so i don't get paranoid over losing it when updating or jb'ing my phone.
It's still pretty new. Give it some time to get around. once developers get the hang of how it works, every game will have it.
I heard many devs that are afraid to update to iCloud,to not have any trouble with game saves (like corrupting them by asccident),and they need to test this feature first,which takes some time.
Here's a thread that has kind of talked about this! http://forums.toucharcade.com/showthread.php?t=110719
Some games tell you in their AppStore description, but not all. A quick google search is always good. I'm also trying to post all iCloud supported games and apps on my twitter page.
