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Leon Hartwig

Game Credits


Tacoma (2017)   (Programming)
Dishonored: The Brigmore Witches (2013)   (AI Programmer)
Dishonored: The Knife of Dunwall (2013)   (AI Programmer)
Dishonored (2012)   (AI Programmers)
Xiaolin Showdown (2006)   (Programmers)
Half-Life: Counter-Strike (2000)   (Linux Engineer)

Quality Assurance

The Novelist (2013)   (Playtesters)


Gone Home (2013)   (Hardware)


The Bureau: XCOM Declassified (2013)   (Additional Support)


The Interactive Adventures of Dog Mendonça ... (2016)   (Backers)
Virginia (2016)   (Special Thanks (Variable State))
Tesla Effect: A Tex Murphy Adventure (2014)   (Extra Special Thanks)
Eldritch (2013)   (Special thanks to)
Gone Home (2013)   (Special Thanks)
Legends of Eisenwald (2013)   (Special Gratitude to our Kickstarter Backers)
BioShock (2008)   (Special Thanks)
Golden Axe: Beast Rider (2008)   (Secret Level Special Thanks)


BioShock 2: Remastered (2016)   (2K Marin and 2K Australia)
BioShock 2 (2010)   (2K Marin & 2K Australia )
Counter-Strike: Condition Zero (2004)   (Valve)

Developer Biography

Leon Hartwig came to Valve by way of the Half-Life MOD community. His business title with Valve is Software Developer/Ur-Quan Master. He created the Phineas Bot modification for Half-Life and made some minor programming contributions to Counter-Strike.

Before joining Valve, Leon studied computer science at Western Michigan University. Having lived in Michigan all of his life, Leon is finding the mild Seattle winters comfortable but would like to make a request to the weather gods for an actual summer rather than an extended spring.

Last updated: Jul 16, 2003