There are a ton of great games to play on the iPhone. Most of them have multiple levels and achievements to unlock. You wouldn't want to lose your game progress and achievements in the event that you have to restore your iPhone.
For jailbreakers, backing up data is essential. To upgrade to a new version of iOS, a jailbroken iPhone is completely wiped and updated to the default setup of the next iOS release. A new jailbreak has to then be applied, and all personal data (media, contacts, jailbreak apps, etc) has to be synced back onto the iPhone.
Through the magic of SSH, you can save your iOS game data on your computer in the event that you have to restore. Here's how to do it...