In past we have covered many tools to retrieve product key of windows and other software like office now here is dedicated tool Game Key Revealer to recover and find product key/cd key of games.
Game Key Revealer retrieves the CD-Key and Serial for installed games on computer. If you lost legal CD-Keys or Serials of your purchased games, you can find them with help of Game Key Revealer. It displays over 1000 games keys along with Save to Text or Word (Word XP and above & print feature.
Game Key Revealer