Good thread. I won't post pics or descriptions, would take too much space and time. I'll just post a list of games I upvoted, plus links of course.
Evoland http://steamcommunity.com/sharedfiles/filedetails/?id=122301377 (looks great, my 1st pick)
Legends of Eisenwald http://steamcommunity.com/sharedfiles/filedetails/?id=113108799
Fester Mudd: Curse of the Gold http://steamcommunity.com/sharedfiles/filedetails/?id=108161841
Cradle http://steamcommunity.com/sharedfiles/filedetails/?id=94530345
Al Emmo and the Lost Dutchman's Mine http://steamcommunity.com/sharedfiles/filedetails/?id=94874423
Rick Future http://steamcommunity.com/sharedfiles/filedetails/?id=93230269
The Sea will Claim Everything http://steamcommunity.com/sharedfiles/filedetails/?id=93006822 *
ASA - A Space Adventure http://steamcommunity.com/sharedfiles/filedetails/?id=95628194 *
Black Mirror II http://steamcommunity.com/sharedfiles/filedetails/?id=94508175 *
Black Mirror III http://steamcommunity.com/sharedfiles/filedetails/?id=94512062 *
Cognition: An Erica Reed Thriller http://steamcommunity.com/sharedfiles/filedetails/?id=92915746 *
Ghost Pirates of Vooju Island http://steamcommunity.com/sharedfiles/filedetails/?id=105769124 *
Haunted http://steamcommunity.com/sharedfiles/filedetails/?id=105947297 *
Lost Chronicles of Zerzura http://steamcommunity.com/sharedfiles/filedetails/?id=105613473 * **
* These games are already released in retail form and/or on other download platforms. I already got four of them and only upvoted those eight games because the worlds needs more adventure games on more platforms.
** This is one of the best adventure games of 2012.
