Dear Ester has been around for a while. I know I downloaded it about two years ago. I guess it is being remade into a much larger game. Another good one, and this is a real game, is Korsakovia. I believe it is a Half Life 2 mod. It is very scary, much like Amnesia.

http://www.thechineseroom.co.uk/korsakovia.html

Hi BrownEyedTigre,

Its because the puzzle is the Island itself, and the gameplay is centered on immersing you into the world and story.

Neil