The phrase cd key for homeworld cataclysm refers specifically to a game. The CD key is the set of numbers and letters u must put in for it to work. They are literally thousands of sites dedicated to CD keys. It's kind of an industry in it's self. I looked online and found one cd key for homeworld cataclysm. It is GAF6-CAB4-SEX5-ZYL6-2622 .
