Once you provide a bit more context, I can give you a more detailed breakdown of the "story" behind it. Main game repository for Beyond All Reason. - GitHub
If you are looking for a key without a standard purchase, the developers and community occasionally host official events: the bus activation keytxt patched
If this is for a specific "repack" or mod, mentioning the source site (like CrackWatch ) can help others troubleshoot. The Bus - Steam Community Once you provide a bit more context, I
: Some guides suggest right-clicking the activation_key.txt file, going to Properties , and checking Read-only so the game cannot overwrite or delete it upon startup. going to Properties