Photopia by Adam Cadre

http://adamcadre.ac/if.html

Photopia by Adam Cadre

Very interesting experience.  Interactive Fiction.  Style is of the old Infocom games but it's not a point system puzzle game.  It jumps around several spots that start to connect as you go along.  There is a java version to play in browser.

http://www.gamesradar.com/f/the-pcs-most-wtf-games/a-20100721111716868027


Also in comments linked to article about the game Pathologic...which is well...sounds like creepy depressing game but very interesting read.
http://www.rockpapershotgun.com/2008/04/10/butchering-pathologic-part-1-the-body/