It's interesting... I have no particular interest in Assassin's Creed one way or the other, and love Animal Crossing, but yet when I see "AC" the first thing that comes to mind for me personally is Assassin's Creed all the same. Like I suppose it's that I'm used to seeing individual games in the Animal Crossing series abbreviated stuff like AC:NL for New Leaf, but I'm just not used to seeing "Animal Crossing," as in the series as a whole, being abbreviated as "AC" all the time, whereas despite not being an Assassin's Creed fan, that's a series I nonetheless have seen abbreviated that way in thread titles and stuff and just absorbed it through osmosis I guess. And so when I see AC by itself, it's Assassin's Creed that comes to mind for me.