Glad you asked...
You can use white toothpaste to fix a scratched video game disk. Locate the scratches on the disk and apply a small dab of toothpaste. Use a damp cloth to rub the toothpaste into the scratch in a back and forth motion. Rub for a few minutes and then wash the disk clean of all toothpaste. Dry the disk completely before putting it into your game system.
Then again, this answer might help you...
To fix a scratched PS2 game you will need to clean it using DVD or CD cleaner. Rub the shiny part of the game with the cleaner and a rag to fix and fill in the scratch.

