Here's My List:
1. Syberia
2. Shivers
3. Monkey Island 1
4. Monkey Island 2
5. Dark Fall
6. Amber: Journeys Beyond
7. The Longest Journey
8. Gabriel Knight 1: Sins of The Father
9. Tex Murphy: The Pandora Directive
10. The Cameron Files: Secret At Loch Ness
11. Myst
12. Myst III: Exile
13. Shivers II
14. Riven
15. Riddle Of The Sphinx
Edit: I think Quandary must've been a little on the drunk side when they made up their list!

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