Oh, then didn't alacat word it incorrectly? He stated "I think we should unify these.", which means to make it one or merge it together. For that reason, I thought he just missused "series" and "game" - that's more likely to swap if you use both in one sentence than misusing "unify". Based on the first sentence, I thought alacat considered "further information" as a useless information and that people will likely search for the whole franchise than certain game, I just thought he swapped these two because of the misuse of "unify". In that case, I agree with him.
Edit: Nevermind, you were talking about sources and then said that you want to "unify these", you confused me. If you were for using the accurate name of the game, then I agree.