You Find Yourself in a Room.

You Find Yourself in a Room is short, simple, tedious at points, and yet oddly compelling. The parser is a bit on the clunky side, but it's sufficient for this game's needs.

(Spoiler - click to show)The game is somewhat "meta" in that you, the player, are not assuming the role of the person trapped in the room, but of someone sitting at a keyboard interacting with a text adventure created by, for lack of a more appropriate label, the game's antagonist. You Find Yourself in a Room is billed as a "sister game" to the author's previous Viricide, which makes brief mention of an AI that went insane and started tormenting its users through text adventure games - this is one of those games, and after you've solved a few puzzles, the AI will make his presence known and spend the rest of the game taunting you, never passing up an opportunity to remind you of your "human" frailties and how you could never surpass one as "eternal" as him. He's just petty enough overall that the general effect is to push you forward, simply for the opportunity to shut him up, and you finally get to do so in epic fashion.

Again, You Wake Up in a Room is not for everyone: it's not an epic quest or a thoughtful study, but a competently-assembled timewaster that builds up towards a satisfying payoff.