I chose "Other."

It's in my top three. And by top three, I mean I mostly play from three key series with some other games hiding in my stacks. I mostly play Mega Man (mostly Classic, X, and Legends), The Legend of Zelda, and Final Fantasy. At this point, I can't really decide which series I like best. Mega Man is there for when I want an action game, Zelda is my go-to adventure, and Final Fantasy is my RPG of choice.

Every now and then one series will try another genre. Mega Man had the Zelda-like Legends series while the Battle Network series and X: Command Mission are RPGs. Zelda... well, Adventure of Link had a leveling system, but that's about it. And Final Fantasy has action games and adventure games.

So really, I'm pretty set (and happy!) with all of these.