Apparently, 4 out of the 5 uses of this tag were by me, so let me try to explain a bit of my thinking:
My interpretation was that questions tagged [game-info] pertained to factual, embedded data of a game that should in no way be subjective at all and therefore should not differ from answer to answer.
For instance, the difference between certain weapons (in terms of damage, effect, range etc.) as opposed to how to *use* each of said weapons. The former question has answers that can be quantified specifically as part of the games mechanics, whereas the latter question is more subject to player experience, although it can still be answered.