Original 25-character physical codes can often still be redeemed directly on Steam to unlock the digital version of the game.
: Some older installers include a section for a "retail code" separate from the CD-Key. Expert advice suggests you can often ignore this section during setup. DVD Validation Original 25-character physical codes can often still be
Trusted third-party retailers offer "Autokey" systems, delivering your code instantly to your email after purchase 1.2.1. 3. How to Activate Your Key (Retail to Steam) Original 25-character physical codes can often still be