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Mike O'Brien

Game Credits


Guild Wars 2 (2012)   (President)


Guild Wars 2: Heart of Thorns (2015)   (President & Executive Producer)
Guild Wars 2 (2012)   (Executive Producer)
Guild Wars: Eye of the North (2007)   (Executive Producers)
Guild Wars: Factions (2006)   (ArenaNet Executive Producers)
Guild Wars: Nightfall (2006)   (Executive Producers)
Guild Wars (2005)   (Executive Producers)


Guild Wars: Eye of the North (2007)   (Designers)
Guild Wars: Factions (2006)   (Designers)
Guild Wars: Nightfall (2006)   (Designers)
Guild Wars (2005)   (Designers)
Championship Manager 4 (2003)   (England (Non-League))
Diablo (1996)   (Diablo Strike Team)


Guild Wars: Eye of the North (2007)   (Programmers)
Guild Wars: Factions (2006)   (Programmers)
Guild Wars: Nightfall (2006)   (Programmers)
Guild Wars (2005)   (Programmers)
Diablo II (2000)   ( & Realm Programming)
Diablo II (Collector's Edition) (2000)   ( & Realm Programming)
StarCraft (1998)   (Programming)
StarCraft: Brood War (1998)   ( Programming)
StarCraft (Demo Version) (1998)   (Programming)
Diablo (1996)   (Programming)
WarCraft II: Tides of Darkness (Demo Version) (1996)   (Autoplay Programming)
WarCraft II: Tides of Darkness (1995)   (Autoplay Programming)


Grand Theft Auto: San Andreas - Special Edition (2005)   (Radio Commercial Voices)
Grand Theft Auto: San Andreas (2004)   (Radio Commercial Voices)

Quality Assurance

Iron Phoenix (2005)   (Product Analysts)
Tony Hawk's Underground (2003)   (Test Team )
Disney's Stitch: Experiment 626 (2002)   (QA Project Lead)
Disney's Pooh's Party Game: In Search of... (2001)   (QA Test Team)


Diablo III (2012)   (Team special thanks)
WarCraft III: Reign of Chaos (2002)   (Our thanks to)
Dr. Brain Thinking Games: IQ Adventure (1998)   (Special Thanks)
The Roberta Williams Anthology (1996)   (Special Thanks)


Diablo II (2000)   (Technical Strike Team)
Diablo II (Collector's Edition) (2000)   (Technical Strike Team)
StarCraft (1998)   (Strike Team)
StarCraft (Demo Version) (1998)   (Strike Team)
Diablo (1996)   (Diablo Strike Team)

Developer Biography

Mike O'Brien was a company director of Blizzard, where he worked for four and one-half years. He was most recently the team lead and lead programmer of Warcraft III, and personally developed the game's 3D rendering engine. Mike was the original creator and architect of and was lead programmer on that project. He was also a senior programmer on StarCraft and Diablo, as well as the author of the network code for both games, and was a programmer on Warcraft II. Mike was featured as one of the 25 most influential people in the game industry in PC Gamer's September 1999 cover story, "Game Gods."

In March, 2000, he founded ArenaNet with Pat Wyatt and Jeff Strain.

Source: ArenaNet official company homepage.

In early October 2019 he left ArenaNet to found ManaWorks.

Last updated: Aug 13, 2021

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