Quote Originally Posted by Mutant Platypus View Post
Silly copy protection technologies... these games are so old they either don't have any copy protection or their copy protection consists of a CD key that isn't verified online.
Besides Half Life 2 which needs to be registered to a specific Steam account and can't be transfered once activated.

Most of the games are worth around $1-$5 each if that, I can't see any titles that stand out as valuable.