Just because you burn a game doent mean you cant to back up your own property. Laws vary from place to place. Now if you borrow or rent them then burn them then yes that is illegal.

Some people like my self modify wheter it be a soft mod or a mod with a chip because we value our property. I personally have 3 kids. The oldest loves to play on the xbox. I cant put up the games and let her play them starait from hard drive and no worries of having to go pay another $20-$50 again within a year. Kids are kids, thats why I back mine up. Same with there Barbie movies and etc. I put backed up movies in the case and the originals in a safe place normally in a folder style case. I would rather waste .30 a disc the the price at the store.

If you are concerned about being legal state where you are at(country/state) and I am sure someone in your area may be able to enlighten you on what you can do and cant do.