CD keys were rarely random. To allow for offline validation, developers used mathematical algorithms where the characters in the key had to satisfy specific checksum requirements (such as Modulo 11).
In response to this demand, a shady industry emerged: CD key generators. These illicit tools promised to generate working CD keys for Battlefield 1942, allowing players to bypass the need for purchasing the game or subscribing to EA's online service, Battlefield Online. One such generator, the "Battlefield 1942 CD Key Generator," became notorious among gamers and security experts alike. battlefield 1942 cd key generator
Since the GameSpy master servers went down in 2014, community groups like Team Simple Moongamers CD keys were rarely random