| Company | Based in | Founded |
|---|
| 2K | Novato | 2005 |
| Activision | Santa Monica | October 1, 1979 |
| Airtight Games | Redmond | 2004 |
| Amaze Entertainment | Kirkland | 1997 |
| ArenaNet | Bellevue | 2000 |
| Aspyr | Austin | 1996 |
| Atari Games | Milpitas | July 1984 |
| Atari, Inc. | New York City | February 1993 |
| Bethesda Game Studios | Rockville | 2001 |
| Big Huge Games | Timonium | February 2000 |
| Black Isle Studios | Orange County | 1996 |
| Blizzard North | San Mateo | 1993 |
| Bluepoint Games | Austin | March 9, 2006 |
| Cinemaware | Burlingame | 1986 |
| Cyan Worlds | Wilmington, Mead | 1987 |
| Deck Nine | Louisville | 1997 |
| Digital Anvil | Austin | 1996 |
| Firaxis Games | Sparks | 1996 |
| Flagship Studios | San Francisco | 2003 |
| Giant Sparrow | Santa Monica | March 22, 2009 |
| Glu Mobile | San Francisco | 2005 |
| Google Arts & Culture | — | February 2011 |
| Gray Matter Interactive | Los Angeles | 1994 |
| Halo Studios | Redmond | 2009 |
| High Moon Studios | San Diego | 2001 |
| Imagic | Los Gatos | 1981 |
| Impressions Games | Cambridge | 1989 |
| Infinity Ward | Woodland Hills | 2002 |
| Infocom | Cambridge | June 22, 1979 |
| Insomniac Games | Burbank | February 28, 1994 |
| Iron Lore Entertainment | Boston | October 2000 |
| LCG Entertainment, Inc. | Malibu | December 27, 2018 |
| Loki Entertainment | Tustin | November 9, 1998 |
| MicroProse | Hunt Valley | 1982 |
| Mistwalker | Tokyo, Japan, Honolulu | 2004 |
| Monolith Productions | Kirkland | October 25, 1994 |
| Mythic Entertainment | Fairfax | 1995 |
| Nerve Software | Richardson | 1999 |
| NetherRealm Studios | Chicago | 2010 |
| New World Interactive | Denver | 2010 |
| Nicalis | Santa Ana | 2007 |
| Nightdive Studios | Vancouver | 2013 |
| NovaLogic | Agoura Hills | 1985 |
| NStigate Games | Marin County | March 1998 |
| Obsidian Entertainment | Irvine | June 12, 2003 |
| Oddworld Inhabitants | Berkeley | 1994 |
| Panic | Portland, Oregon | — |
| Parker Brothers | Beverly, Salem | 1883 |