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{{Book Infobox
|image=FileFinal hours of portal 2 cover.jpg|250px
|name=The Final Hours of Portal 2
|author=WikipediaGeoff Keighley|Geoff Keighley
|language=English
|subject=Video game design
|publisher=Ola Balola LLC
|date=April 21st, 2011http//itunes.apple.com/us/app/the-final-hours-of-portal-2/id432031492?mt=8 Official iTunes page
|pages=
|ISBN=
|hidei=
}}
'''''The Final Hours of Portal 2''''', also known as '''''Portal 2 - The Final Hours''''', is a WikipediaMicrosoft Windows|Windows, WikipediaMacintosh|Mac and WikipediaiPad|iPad interactive book chronicling the development of ''Portal 2''. Written by WikipediaGeoff Keighley|Geoff Keighley who also authored http//web.archive.org/web/20000304042412/http//www.gamespot.com/features/halflife_final/index.html ''The Final Hours of Half-Life'' (2000) and https//web.archive.org/web/20041113063511/http//www.gamespot.com/features/6112889/index.html ''The Final Hours of Half-Life 2'' (2004), it was released on April 21st, 2011 on iPad and May 17th, 2011 on Steam, and is available for $1.99, €1.99 or £1.49.
The book provides exclusive information about the game's development, as well as numerous previously unreleased concept art images and early screenshots. It also contains interactive features set around standard text.
==Contents==
===Introduction===
====Foreword by Geoff Keighley====
====About the author====
====About the game====
====About the developer====
===Chapter 1 Let the Games Begin!===
Describes a typical day at Valve.
===Chapter 2 Prince Squid and Judge Dredd===
Talks about the origins of Erik Wolpaw and Chet Faliszek and their hiring into Valve.
===Chapter 3 A Triumph, Huge Success===
Summarizes the origin of the Digipen game ''Narbacular Drop'' and its transformation into ''Portal''.
===Chapter 4 Two Bots, One Wrench===
Talks about the ''Two Bots, One Wrench'' design experiment as part of the "Directed Design Experiments".
===Chapter 5 Eccentric Dead Billionaire===
Describes the fifth Directed Design Experiment, ''F-STOP'', or the failed attempt at a ''Portal'' prequel that did not feature any Teleportation|portals.
===Chapter 6 The Aha Moment===
Documents Valve's issue of how to make a storyline-filled game from ''Portal'' and how Aperture Science Personality Construct|Personality Cores were the answer.
===Chapter 7 Just One Person===
Introduces a Valve employee, Karen Prell, and her former work for WikipediaJim Henson|Jim Henson, and talks about the design of Wheatley.
===Chapter 8 The Power of Paint===
Talks about the introduction of the Mobility Gels|paint mechanic to ''Portal 2'' by way of the Digipen student project ''Tag The Power of Paint'' and how they created the Enrichment Shafts|underground areas to introduce it to the player.
===Chapter 9 The Odd Couple===
Describes the Portal ARG|announcement of ''Portal 2'' and the creation of ATLAS and P-body and the co-op campaign.
===Chapter 10 Making Games is Hard===
Summarizes the "surprise" Gabe Newell made at E3 2010 and Valve's need to delay the release date for 2011.
===Chapter 11 Used to Want You Dead===
Describes how Jonathan Coulton worked with Valve on making "Want You Gone".
===Chapter 12 The Final Hours===
Talks about the last few steps before completing ''Portal 2'', including details from inside the "test chamber", or playtesting area.
===Chapter 13 The World is About to Change===
Closes the book by describing the thoughts and feelings of Valve after ''Portal 2'' was finished and released.
===Chapter 14 Unlikely Architects===
Describes development on the ''Portal 2'' DLC ''Peer Review'' and the ''Portal'' level editor.
===Bonus The Art of Rattmann===
A gallery of the artwork left by Doug Rattmann through the Enrichment Center made by artist Andrea Wicklund.
====Gallery====
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===Credits===
==See also==
*''The Art of Portal 2''
*''Half-Life 2 Raising the Bar''
==References==
{{Reflist}}
==External links==
*http//www.thefinalhoursofportal2.com/ Official website
*http//itunes.apple.com/us/app/the-final-hours-of-portal-2/id432031492?mt=8 Official iTunes page
*{{Steam|104600}}
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{{DEFAULTSORTFinal Hours}}
CategoryPortal 2
CategoryThe Final Hours of Portal 2
CategoryDevelopment booksCategoryThe Final Hours