This weekend I kept myself entertained with The Stanley Parable, a first person exploration game. Some of you may have heard of the game before and that may be because it is also an HL2-mod with the same concept.
I don’t want to say anything about the story, because spoilers would ruin the whole game. Instead, I’ll summarize like this: If you like games a weird story that makes you go “huh?” or like seeing the third wall broken, I think you should give it a few hours. One day/evening of entertainment with Stanley Parable costs you a little less that a ticket to the movies. (The current sales price on Steam is 9,59€.)
If you still are unsure the game has a great demo that you can try (and should try, even if you are planning to play the game).