1. Indiana Jones and the Fate of Atlantis
2. King's Quest VI: Heir Today, Gone Tomorrow
The best of the series, mostly due to Jane Jenson working on the writing side of things. A big adventure with some really challenging parts, very good voice acting and satisfying plot.
3. The Legend of Kyrandia
One of the most attractive adventure games released at the time, and with a good story and world to back it up. It was never too difficult and felt as if it was aimed a little more towards younger players sometimes, but very engaging none the less.
4. Stunt Island
I spent many hours on this fantastic game, mostly in the design mode trying to recreate scenes from many of my favourite films. Mostly, I remember trying to do the moment from The Fugitive when Harrison Ford jumps from the bus as the train hits it - never quite got it to work!
5. Wolfenstein 3D
6. Alone in the Dark
It looks ridiculous in this day and age, but this game really scared me as a youngster. Good use of sound, but really quite difficult and I remember the camera angles were always awkward.