Half-Life 2 mod and offbeat narrative experiment, The Stanley Parable: HD Remix, is currently awaiting your votes on its Steam Greenlight page. The game, if you can call it that, looks to be a unique take on how game narrative affects and is affected by player actions.
The Stanley Parable: HD Remix has hit Steam Greenlight.
Details of the original mod, which does not require Half-Life 2 to play on PC, can be found over here.
The Stanley Parable: HD Remix is most easily understood by watching this video below and perusing the screenshots on the Greenlight page, which tell you nothing and everything at the same time. Take a look and then sit in a dark room with your thoughts.
Screens are through here.