My tips to preserve games are:
-Don't be a 10 year old kid
-Don't borrow a game to a 10 year kid
-NEVER borrow to anyone at all!!
I was stupid enough to borrow a game to a kid once...
The CD had so many scratches it look like he used it as a cutting board. The manual was wrinkled and torn...
I was stupid enough to borrow ANOTHER game, a Game Boy one... To ANOTHER KID, the kid told me he was having a hard time beating the game... A game not only he should be embarresed to admit he played, but the should die of shame becuase he couldn't beat (not Hamtaro, something worst).... He never returned it....
Spoiler:Sabrina The Animated Series: Zapped
The only games I have in bad shape were in bad shape to begin with, the only exception was "Monster Rancher" which claimed that every CD you popped in could unlock a monster.... All that CD swapping is bad for the CDs...
The boxes are in a good condition too...
I wonder what do kids do to CD to get them in that bad shape? Just try to get a used CD from a video rental store and you'll see what I mean....
90% of my diskette games work... And I can't tell if my 5.25" ones work, because I think my used floppy drive is half-broken....
I always have empty jewel cases to replace old broken ones....
Just give your games some TLC and they'll be fine....