I've been really looking forward to Machinarium for a year or so now, but it's not fair to include it as it hasn't quite yet been released (there is a demo
though and I loved it).
are highly recommended.
I really enjoyed 5 Days a Stranger
and 7 Days a Skeptic
I also remember having enjoyed quite a lot The Lost Files of Sherlock Holmes: Case of the Rose Tattoo
. I was once an avid Sherlock Holmes reader, so I can say the essence is really there.
And what else? mmh... The Neverhood
was also mentioned and I also love it (but was it a graphic adventure game? not sure about that..).
Oh, yes! here it is a game not many people heard about and it's very funny and bizarre, Kingdom O' Magic
. Unfortunately it's not an easy game to get this days.
I'm sure there is more, but those are all the highlights I remember now. I recently began playing Beneath a Steel Sky
and while it's not blowing my mind I'm rather enjoying it so far. You can get it for free on the link.