The Stanley Parable is now available for purchase on Steam, with 20% off until October 23.

In case you never heard of this Half Life 2 mode turned full game, The Stanley Parable is an exploration game about free will, choice and narrative. You can download the demo on Steam as well to get a better sense of this unique (and frankly, kind of hilarious)  experience.

But before you do all that – watch The Stanley Parable launch trailer below.

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