Mike O'Brien
Moby ID: 9166
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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 Battle.net 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.
Credited on 25 games
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Guild Wars 2: Heart of Thorns (2015, Windows) | President & Executive Producer |
Grand Theft Auto: San Andreas (2012, PlayStation 3) | Radio Commercial Voices |
Guild Wars 2 (2012, Windows) | President |
Diablo III (2012, Macintosh) | Team special thanks |
Guild Wars: Eye of the North (2007, Windows) | Executive Producers |
Guild Wars: Nightfall (2006, Windows) | Executive Producers |
Guild Wars: Factions (2006, Windows) | ArenaNet Executive Producers |
Grand Theft Auto: San Andreas (Special Edition) (2005, PlayStation 2) | Radio Commercial Voices |
Guild Wars (2005, Windows) | Executive Producers |
Iron Phoenix (2005, Xbox) | Product Analysts |
Tony Hawk's Underground (2003, PlayStation 2) | Test Team |
Championship Manager 4 (2003, Windows) | England (Non-League) |
WarCraft III: Reign of Chaos (2002, Macintosh) | Our thanks to |
Disney's Stitch: Experiment 626 (2002, PlayStation 2) | QA Project Lead |
Disney's Pooh's Party Game: In Search of the Treasure (2001, PlayStation) | QA Test Team |
Diablo II (2000, Macintosh) | Battle.net & Realm Programming |
Diablo II (Collector's Edition) (2000, Windows) | Battle.net & Realm Programming |
StarCraft: Brood War (1999, Macintosh) | Battle.net Programming |
StarCraft (1999, Macintosh) | Programming |
StarCraft (Demo Version) (1998, Windows) | Programming |
[ full credits ]

Frequent Collaborators
People- 15 games with Patrick Wyatt
- 12 games with Jeff Strain
- 12 games with Eric Flannum
- 11 games with James Phinney
- 11 games with Paul Eiding
- 10 games with Bill Roper
- 10 games with Sam Didier
- 10 games with Glenn Stafford
- 10 games with Frank Pearce Jr.
- 10 games with Janice G. Davidson
Companies
- 10 games with Blizzard Entertainment Inc.
- 6 games with NCsoft Corporation
- 6 games with ArenaNet, LLC
- 6 games with NCsoft Europe Ltd.
- 6 games with Computer Games Distribution, s.r.o.
- 6 games with CDP Sp. z o.o.
- 5 games with Epic Games Tools LLC
- 5 games with NCSOFT West
- 5 games with Valve Corporation
- 5 games with Activision Blizzard...
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