User blog comment:Fastolph Cottar/Terrain regen bug/@comment-4521126-20120109180227/@comment-4583259-20120115070150

I thought of that, so every hour or two I was saving the iPad data by doing backups to iTunes. There is only one iTunes backup, but the entire hard drive is backed up with Time Machine, and I was also manually making copies of the iPad backup. So I could use the "restore from backup" feature in iTunes to get my game back if something bad happened.

I actually used this technique later, when my game was rendered unplayable by a friendly astronaut. So I can attest that it works.