I don't know any one game will do it single-handedly, but there are a number of games that could influence my decision. I think my biggest influences on the poll would be another Super Smash Bros. or a legitimately good Metroid game. But even above those I would say a new Animal Crossing game would really tempt me. (Of course it has to be a "true" AC; Amiibo Festival and Happy Home Designer, for example, do not satisfy this requirement.)
P.S. I know it's too late now, but why the heck is Smash and Mario Kart listed as one item in the poll? lol
P.S. I know it's too late now, but why the heck is Smash and Mario Kart listed as one item in the poll? lol