MM said there is no reason to backup games, and these days, more than ever, it\'s almost entirely true.
Even if you:
A) Don\'t take care of your belongings, letting them be destroyed.
or

Take good care of your belongings, and have something accidentally destroyed,
there is a simple fact that negates using backups or mods. 99% of the companies out there will be happy to REPLACE your scratched/broken cd if you send them a self addressed, stamped cd holder with the broken CD in it.
In the last 10 years, I\'ve only lost one CD (computer game), when my old CD drive crapped out and warped it with heat. I wrote an email to the company (3D0 in this case), and told me that almost all gaming companies have a simmilar policy. He said they would be happy to replace it, and I sent it in, got a new one back less than 2 weeks later. You send them a disk, they send you a disk (a few may charge two to five bucks, but hey, it\'s prolly your fault).
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For those who don\'t even bother saying it\'s for backup/replacement purposes:
Piracy may seem like an attractive thing to do, it\'s cheap, fairly easy, and you could have 10 games for the price of one. The problem with piracy, and really any crime, is that as soon as you have more than a very small percentage of people doing it, it really can screw up the rest of society. If you have 1% of people shoplifting items, it will cause a minor problem, inconvenience. 10% of people doing it, and suddenly, prices in stores are going to go up waaaay more than 10% (cover costs, new security, less service for more floorwalkers), and you will end up getting watched all the time.
It\'s the same with video game piracy. I know it\'s attractive to people with limited incomes, but rather than hurting the video game community, the future games, and the game companies (cause if they start devoting more money to security features, that\'s less they\'re devoting to games and gameplay, and if some go out of business, the whole community suffers), simply be happy with that two game PS2 library.
You will find you will only end up playing 2-3 games out of the twenty you could burn anyways.