Games Key Decryptor

Games Key Decryptor is a free Windows utility that instantly recovers lost license keys for your games.

It automatically detects and recovers the license/CD key of all the supported games installed on your system. Currently, it supports around 50 PC games including Battlefield, Call of Duty, FIFA, NFS, Age of Empires, Quake, The Sims, Half-Life, IGI, Star Wars and many more. After the recovery, you can backup the CD key list to an HTML/XML/TEXT/CSV file.