Xscape2041: Some hate it, many like myself love them: the cryo games. Having recently played Atlantis 1-3 which are very good and atmospheric (especially 1+2, not so much part 3), I crave for more! :-)

I'm sure the "value"/volume of the adventure portion of gog would greatly benefit from it. A few are available on the Microids site, but I'm sure they wouldn't mind another channel to sell their games and generate more income for them:-)
Below are my game suggestions (Please use the best source for graphics/sound possible, for some of the games there is a DVD-ROM version, gog :-) ).

No simplified versions please, like Purple Hills!

-Atlantis 4+5
-Lost Eden (wonderful, played it as a kid!)
-Aztec
-China
-Versailles 1+2 (not the crappy purple hills version!)
-Odyssey: The Search for Ulysses
-Ring: The Legend of the Nibelungen
-Ring 2
-Salammbo: Battle for Carthage
-The New Adventures of the Time Machine
-Faust
-Egypt 1, 2, 3
-Frank Herbert's Dune
-Pompeji
-Jerusalem
-King Artus 1+2 (arthur's knights)
-secret of the nautilus
-cleopatra
-Dr. Jekyll & Mr. Hide
-Venezia
-Black moon chronicles
-Dragon lore
-Thorgal: curse of atlantis
-Casanova
-Asterix & Obelix :-)

Feel free to comment if you agree or if I missed some titles!

Xscape2041: I love Syberia, too.
But from the cryo games I played - they are not exactly like that. Most of them are more Myst-like, Atlantis 1+2 gives you a good idea what to expect imo.

OT: If you love Microids/Cryo, also check the games by Kheops Studios:

The Egyptian Prophecy (2004)
Crystal Key 2 (2004)
Return to Mysterious Island (2005)
ECHO: Secrets of the Lost Cavern (2005)
Voyage: Inspired by Jules Verne (2005)
The Secrets of Da Vinci: The Forbidden Manuscript (2006)
Destination Treasure Island (2006)
Cleopatra a Queen's Destiny (2007)
Nostradamus: The Last Prophecy (2007)
Dracula 3 - The Path of the Dragon (2008)
Return to Mysterious Island II (2009)
The Fall Trilogy: Separation (2009)
The Fall Trilogy 2: Reconstruction (2010)
The Fall Trilogy 3: Revelation (2011)

Xscape2041: I know, I have yet to get it :-)

What about more Cryo games? Anything in the "pipeline"?