Fresh of the news of Creat’s new Wakeboarding HD game, Creat seems to have quietly updated the name for Magic Ball to Magic OrBz. No explanation for this move, but perhaps the original name offered to much room for puns.
Recently uncovered by PSNStores an ESRB posting verifies the name change.
Also if you own the title you can check your trophies and you will see that the name is still Magic Ball. If you compare trophies with a friend the name will be Magic OrBz.