I'm 19 (20 this summer), but over voice-chat, people say I talk like I'm in my mid-30's. In person people say they think I'm in my late 20's, until I tell them my real age, then they promptly say "Oh, okay, I can see that. It's just from the way you talk you seem...older." It's probably because my reading material for early childhood was mostly classic literature (Dickens, Bronte, Poe, Shelly, Twain, etc.) and that my mother specifically chose older cartoons bought on vhs (Merry Melodies, Looney Tunes, the old Winnie the Pooh featurettes, etc., with the occupational Don Bluth piece) for me to be exposed to, rather than modern tv from the nineties (I didn't see my first modern tv show until 1999).
As to my first video game, I got an N64 as my first console in 1998, with my first game being the Legend of Zelda: Ocarina of Time.