Most Helpful Guy
Gosh, that's near impossible... I've played and loved sooo many!
Well, I am completely obsessed with the Legend of Zelda series, and my favorite game every is "The Ocarina of Time"!
Second to Zelda, my favorite series used to be Pokémon by insanely far, but the newer games just feel less and less like the ones I obsessed over. I don't play PkMn anymore...
From what I can think of, my top two favorite games outside of Zelda now are... Golden Sun and Grandia II?
I've only beaten the first Golden Sun. I'm playing the second now. It's great, but not quite so much as the original so far.
I've only played the second game of the Grandia series, but loved it very much.
Very close are Final Fantasy X and Elder Scrolls V: Skyrim. (I've also played Elder Scrolls IV, but like V much better. FFX is sadly the only Final Fantasy game I've played so far, but I've seen enough of VII's characters to love that game a lot too.)
Most Helpful Girl
Can think only of two as my favourites:
Call of Duty (the first one in the Call of Duty series)
Battlefield 1942 (the first one in the Battlefield series)
My daughter has more favourite videogames than I do.
She likes League of Legends, Guild Wars 2, DC Universe Online, Star Wars:The Old Republic, Dungeons & Dragons Online, among many others... she is currently playing World of Tanks Blitz.