Description

Portal 2 - The Final Hours is a digital book that takes you deep within the top-secret offices of Valve for an unvarnished look at the creative process behind Portal 2.

Now with a free bonus chapter added!

11 years ago
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Thank you for this awesome giveaway!

11 years ago
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Thank you!

11 years ago
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Thanks for the giveaway!

11 years ago
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Thank you!

11 years ago
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Thanks!

11 years ago
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Thanks a lot!

11 years ago
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Thank you :)

11 years ago
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thanksz

11 years ago
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thank you :D

11 years ago
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Thanks! :)

11 years ago
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Thank you very much!

11 years ago
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Deleted

This comment was deleted 7 months ago.

11 years ago
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Thanks

11 years ago
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Thank You!

11 years ago
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Thanks

11 years ago
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Thanks

11 years ago
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Thank you for the chance.

11 years ago
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Thank you!

11 years ago
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ty!

11 years ago
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ty

11 years ago
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Thanks!!

11 years ago
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Me

11 years ago
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Thanks

11 years ago
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Thanks.

11 years ago
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