User blog comment:Cybersteel8/"Game" in infoboxes all seem to be wrong?/@comment-3312380-20140127101123/@comment-1618941-20140127212039

DLC 1, 2, 3, and 4, was a standard used here back when Borderlands was the only game, but got phased out after the release of Borderlands 2. The reason was to avoid confusion. Seeing as we'd being using a DLC field to generate links, and possibly categories, we can't really go with just a campaign number.