Some interesting facts about the game and VALVe itself.
It's some kind of interactive magazine/article about "last hours of creating Portal 2".
More info at Steam Store ; )
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thanks
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This digital book is awesome!
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Thanks for the giveaway and good luck everyone!
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Thanks for the Final Hours!
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Thanks for the giveway!!
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Thanks alot!:D
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Thank you
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Zank you herr doktor!
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thanks
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Thank ye
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Thanks!
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Thanks :D
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Thanks!
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thanks
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thanks.
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Danke!
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Thanks!
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thanks
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thanks!!спасибо!!!
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Thanks :)
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Thanks for the Final Hours!
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thanks
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Thanks for the Final Hours!
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Thanks very much :D
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Thanks
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thanks
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