| P2 Entertainment | Hawkinge | December 23, 2004 | — |
| Pack-In-Video | Shibuya, Saumur | August 3, 1970 | video game industry |
| Page 44 Studios | San Francisco | 1998 | video game industry |
| Paintbucket Games | Berlin | — | — |
| Painting by Numbers, Ltd. | — | May 18, 1988 | — |
| Pandora | — | — | — |
| Pandora Box | Nakano | 1989 | video game industry |
| Pangea Software | Austin | 1987 | video game industry |
| Panic Button | — | 2007 | video game industry |
| Paon DP | Chūō | January 20, 1999 | video game industry |
| Papaya Studio | Irvine | 1999 | video game industry |
| Parabole | — | 2012 | — |
| Paradox Interactive | Stockholm | 1999 | video game industry |
| Paragon Software | Greensburg | 1987 | video game industry |
| Paranoid Interactive | — | — | — |
| Parker Brothers | Beverly, Salem | 1883 | game industry |
| Particle Systems | Sheffield | 1993 | — |
| PassTech Games | Villeurbanne | October 11, 2012 | video game industry |
| Pastagames | rue Ligner, Paris | 2001 | video game industry |
| Pavonis Interactive | Louisville | 2015 | video game industry |
| Pawley Games | — | — | — |
| Pax Softnica | Kawasaki | May 14, 1987 | video game industry |
| Pearl GmbH | Buggingen | September 6, 1989 | — |
| PennFilm Studio AB | — | 1967 | — |
| Perfectly Paranormal | Klepp Municipality | August 12, 2015 | video game industry |
| Person of Interests | Glasgow | January 15, 2021 | — |
| Petit Depotto | — | — | video game industry |
| PF Magic | San Francisco | 1991 | video game industry |
| Phantagram | South Korea | 1994 | video game industry |
| Phenomedia | Bochum | 1999 | — |
| Phigames | Manchester | — | — |
| Philips Interactive Media, Inc. | — | 1990 | video game industry |
| PHL Collective | Philadelphia | — | video game industry |
| Phoenix Labs | — | April 2014 | video game industry |
| Phoenixx | — | — | video game industry |
| Piccolo Studio | Barcelona | — | — |
| Picorinne Soft | — | — | video game industry |
| PikPok | Wellington | May 1997 | video game industry |
| Pine Studio | Samobor | 2012 | video game industry |
| Pipe studio | — | 2002 | video game industry |
| Pipistrello | Stockholm | April 7, 2003 | — |
| Pirate Software | — | — | — |
| Pitbull Studio | Sunderland | 2010 | — |
| Pixel | — | — | video game industry |
| PiXEL | — | — | — |
| Pixel Beef Games | Bayreuth | 2020 | video game industry |
| Pixel Soft | Beijing | March 18, 2002 | video game industry |
| Pixelbite | Helsingborg | — | video game industry |
| PixelJAM Games | Asheville | 2005 | video game industry |
| Pixmain | — | 2020 | video game industry |
| Pixonic | Limassol | 2009 | software development |
| Pixpil | Shanghai | — | video game industry |
| Planeta DeAgostini | Barcelona | 1982 | publishing |
| Plasticity Studios | — | — | video game industry |
| Platine Dispositif | — | — | video game industry |
| Play Mechanix | Skokie | 1995 | video game industry |
| Play Ten Interactive | Moscow | 2005 | video game industry |
| Play-It | Bielsko-Biała | 1999 | — |
| Playbae | Gurgaon | 2018 | video game industry |
| Playdek | Carlsbad | 2009 | video game industry |
| Playdots | New York City | — | — |
| Players Software | — | — | — |
| PlayFirst | San Francisco | 2004 | video game industry |
| Playground Games | England, Leamington Spa | 2009 | — |
| Playism | Osaka | May 2011 | video game industry |
| Playmeow Games | Taipei | March 9, 2021 | video game industry |
| Playstack | London | May 7, 2016 | — |
| PlayStation Studios XDev | Liverpool | 2000 | — |
| Playtika | Israel | 2010 | video game industry |
| PM Studios | — | 2008 | — |
| Pocket Studios | — | 2000 | — |
| Pocketpair | Higashi-Gotanda | April 2015 | video game industry |
| Pocketwatch Games | — | — | — |
| Point Blank Games | Berlin | — | video game industry |
| Point of View | Eindhoven | 2000 | computer hardware industry |
| Pokelabo | Minato | November 2007 | — |
| Pollux Gamelabs | Copenhagen | 2004 | — |
| PolyCrunch Games | — | — | video game industry |
| Polygon Art | — | — | video game industry |
| Polyphony Digital | Kōtō | April 2, 1998 | video game industry |
| PomPom Games | — | — | — |
| Pon Pon Games | — | — | video game industry |
| Poncle | London | January 12, 2022 | — |
| Poor Cat | Tula | — | video game industry |
| Pop Software | Sunnyvale | 1986 | video game industry |
| Popcorn Arcade | — | — | — |
| PopTop Software | St. Louis | 1993 | video game industry |
| Porcelain Fortress | Reykjavík | 2016 | video game industry |
| PortaPlay | Copenhagen | — | video game industry |
| Portkey Games | — | 2017 | video game industry |
| Positech Games | — | 1997 | — |
| Powerhead Games | New York City | 2000 | video game industry |
| PowerZ | Montreuil | July 15, 2020 | video game industry |
| Press Play | Copenhagen | 2006 | video game industry |
| Presto Studios | Encinitas | 1991 | video game industry |
| Pretty Fly Games | — | 2013 | video game industry |
| PrincessSoft | — | 2001 | video game industry |
| Prism Leisure Corporation Plc | Enfield | 1980 | — |
| Prism Studios | Belfast | August 5, 2016 | — |
| Private Division | New York City | December 14, 2017 | video game industry |
| Pro Familia | Frankfurt | December 23, 1952 | — |
| Produce! | Japan | April 6, 1990 | video game industry |
| Produktivkeller Studios | Karlsruhe | — | video game industry |
| Project Sora | Itabashi | 2009 | video game industry |
| Project Soul | — | — | video game industry |
| Project Two Interactive BV | Haarlem | — | video game industry |
| Propaganda Games | Vancouver | 2005 | video game industry |
| Proper Games | Dundee | 2006 | — |
| Prospect Games | — | — | — |
| Província Studio | Goiânia | 2013 | video game industry |
| Psikyo | Kyoto | July 17, 1992 | video game industry |
| Psygnosis | Liverpool | 1984 | — |
| Psyonix | San Diego | 2000 | video game development |
| Pujia8 Studio | Changxing Town | December 3, 2015 | — |
| Puppy Games | Notting Hill | — | — |
| Purple Tree | Buenos Aires | — | video game industry |