dyscode: Louvre - The Messenger
is also worth mentioning for $5 / -50% among the nearly complete Anuman catalog sale on sale this week but unfortunately most of them are just Casual games, this is not.
MoP: Well, there's more than that, most notably some of the Cryo adventures. Look out for the episodic re-releases some of these games have had though, (like "Egypt the Prophecy" Parts, "Nostradamus the Last Prophecy" Parts etc., which are the original games cut up into pieces and casualised, to the point of removing some of the harder puzzles...)
Some of the rarer non-casuals:
Aztec (haven't seen this one sold digitally anywhere else?)
The Egypt series:
Egypt 1156 BC Tomb of the Pharaoh Egypt 2 - The Heliopolis Prophecy Egypte 3 - The Egyptian Prophecy Jack the Ripper (don't confuse this with
Jack the Ripper - Extended Edition, which is a completely different, casual game)
Necronomicon - The Dawning of Darkness (they've had the "-50%" on it for ages, but the price is actually reflecting that now)
Paris 1313 - The mystery of Notre-Dame cathedral Road to India Salammbo The Cameron Files - Secret at Loch Ness The Secrets of Da Vinci Versailles II - Testament of the King For something more recent, there's also
Red Johnson's Chronicles (new game from Lexis Numérique, the guys that made eXperience 112 aka The Experiment).
That's some nice info, here.
I forgot to post about Jack the Ripper (Original Adventure) and Salammbo, too
I got it from DotEmu. Nice game, not too hard, nice visual.
I also came across Red Johnson's Chronicles, just today but had not investigated, yet.
So to make it complete, maybe one should mention also,
Little Folk of Faery for $5.
Also Anuman but some kind of 'Villagers' game.
http://www.gamersgate.com/DD-LFF/little-folk-of-faery and Amerzone, $5
http://www.gamersgate.com/DD-AMER/amerzone-the-explorer-legacy