For other uses, see Guthrie (disambiguation).
October 15, 1973
1997 – Present
John Guthrie is a level designer for Valve.
- "Along with his buddy Steve Bond, John started Quake Command, the influential and popular Internet gaming site. John was also the co-creator of “Quake Airplane” and “Quake Kart,” and has constructed many of the chambers and corridors in Half-Life’s Black Mesa Research Center. Since joining Valve in 1997, John has designed levels for Half-Life, Half-Life 2, Team Fortress, Portal: Still Alive, and Portal 2."
- ―Source (March 16, 2015)
Guthrie started working with Steve Bond at the age of 16. While working towards a college degree in computer science, he earned money by delivering pizzas. Guthrie also worked full time providing technical support and web design for an Internet service provider called Nucleus Communications. Before joining Valve, he helped design the website "Blue's News".
Both he and Steve Bond were hired by Valve after Gabe Newell and Mike Harrington obtained from Id Software a list of developers working with the Quake technology. After receing an e-mail from Newell, Bond chose to join Valve. Guthrie followed, and decided to drop out of school. The whole story can be read on their page.
He constructed the chambers and corridors of the Black Mesa Research Facility and the underground train system. Along with Kelly Bailey, he built the test chamber disaster sequence featured at the beginning of Half-Life.
 Half-Life 2 (2004)
He created several AI test maps, and took part in developing the following locations of the game:
Along with Tom Leonard and Steve Bond, he demonstrated their idea of modular artificial intelligence, where creatures could be assembled from components at runtime and exhibit novel emergent behaviors.
 Selected gameography
- Half-Life (1998)
- Half-Life: Opposing Force (1999)
- Half-Life (Dreamcast port) (2001)
- Half-Life (PlayStation 2 port) (2001)
- Half-Life: Blue Shift (2001)
- Half-Life: Source (2004)
- Half-Life 2 (2004)
- Half-Life 2 (Xbox port) (2005)
- Half-Life 2: Lost Coast (2005)
- Half-Life 2: Episode One (2006)
- Half-Life 2: Episode Two (2007)
- Portal (2007)
- Portal: Still Alive (2008)
- Portal 2 (2011)
- ↑ October 11-17, 1997 on Blue's News
- ↑ Our people on Valve's official website
- ↑ 1/11/99 - 10 questions with the Dynamic Duo, Wedge and Choryoth on Gibbed (archived)
- ↑ Wedge and Choryoth's page on Valve's official website (archived)
- ↑ Old Logo Archive on Blue's News
- ↑ The Final Hours of Half-Life - Bring in the Troops Gamespot (March 11, 2000) (archived)
- ↑ About the Valve team on Valve's official website (January 11, 1998) (archived)
- ↑ Half-Life 2: Raising the Bar
- ↑ 9.0 9.1 9.2 9.3 9.4 9.5 9.6 9.7 WC mappack
- ↑ 10.0 10.1 The Final Hours of Half-Life 2
- ↑ The Final Hours of Portal 2