I downloaded "Microsoft Halo for the PC" and worked my way up to the library. That's when I needed cheats. I found the cheats on so many sites but they don't work. I did everything required, like the -console -devmode and later the tilde. The console does appear but when I enter a cheat code it says it cannot be done. Why is it so? Can anybody please advise? Also, I keep reading about the custom edition, what is it and how does it differ from my Halo?