I remember my aunt gave me a bunch of CD's and I was looking through all of them, and then my eye caught Myst. I took it out, played it, and was hooked. I was 9 so I couldn't do it without a walkthrough, but even with, I enjoyed the game so much I played Riven (imo one of the greatest games ever made) and then Exile. After that I bought every single new Myst game that was released since Uru. I am a
huge Mysthead.
That being said, I also love ALL the Monkey Islands (except 4, that one was dull) and puzzle-adventure games (like Syberias, Machinarium, Grim Fandango, TLJ, and Dreamfall, my all-time favorite game).
But yeah, Myst was my first.