You know what about PS1 and PS2 games. If the CD has any kind of major scratch, you'd have to get a brand new copy of the game. I remember one of my friends suggesting that I pour rubbing alcohol on the PS1 lens so that the scratched CD would work. Me being the skeptic asked my friend to demonstrate this with his PS1. Needless to say, he lost a PS1 that day and till this day, we always laugh about it.