| Piña | Developer | |
| Pjchardt | Developer | |
| Pk-9 Studio | Developer | |
| Placate The Cattin | Developer | |
| PlaceHolder | Developer | |
| Placebo Games | Developer | |
| Placeholder Gameworks | Developer | |
| Plague | Developer | |
| PlakNightGames | Developer | |
| Plan 1 | Publisher | |
| Plan B | Developer | |
| PlanchetteGames | Developer | |
| Planet Alpha | Developer | |
| Planet Entertainment | Publisher | |
| Planet Interactive | Developer | |
| Planet Moon Studios | Developer | |
| PlanetEightGames | Developer | |
| PlanetHoward | Developer | |
| PlanetRealm | Developer | |
| PlanetTzero | Developer | |
| PlanktonTech | Developer | |
| Planning Office WADA | DeveloperPublisher | |
| Planning Office Wada | DeveloperPublisher | |
| Planschi | Developer | |
| PlantLeaf | Developer | |
| PlantMama | Developer | |
| PlantOnMyPing | Developer | |
| Planta | Developer | |
| Plantus | Developer | |
| Plasma Spade | Developer | |
| Plastic | Developer | |
| Plastic Games | Developer | |
| Plastic Piranha | Developer | |
| Platine Dispositif | Publisher | |
| Platinum Egg | Developer | |
| Platinum Productions | Developer | |
| Platinum Productions (David J Anderson, Ian Morrison) | Developer | |
| Platinum Productions (David J Anderson, Ian Morrison, F David Thorpe) | Developer | |
| Platinum-Egg | Developer | |
| PlatinumGames | DeveloperPublisher | |
| PlatinumNinja72 | Developer | |
| Plato | DeveloperPublisher | |
| PlatonGames | Developer | |
| Platoniax Studio | Developer | |
| Platonic Partnership | Developer | |
| PlattSoft | Developer | |
| Platypus Studios | Developer | |
| Platypuus | Developer | |
| Plausible Concept | Developer | |
| Play Avenue | DeveloperPublisher | |
| Play Byte | Publisher | |
| Play Cute | Developer | |
| Play It | Publisher | |
| Play It (2003 Re-Release) | Publisher | |
| Play It Games | Publisher | |
| Play It Ltd | Publisher | |
| Play It Ltd (2003 Re-Release) | Publisher | |
| Play It! | DeveloperPublisher | |
| Play It!EU | Publisher | |
| Play It!PAL | Publisher | |
| Play Mechanix | DeveloperPublisher | |
| Play Mechanix, Inc. | Publisher | |
| Play NYC 2020 | Developer | |
| Play THQ | Publisher | |
| Play Ten Interactive | Publisher | |
| Play Wireless | Developer | |
| Play it! | Publisher | |
| Play8Bitars | Developer | |
| PlayDoujin | Publisher | |
| PlayDude And Go India | Developer | |
| PlayEveryWare | DeveloperPublisher | |
| PlayEveryWare Games | Publisher | |
| PlayFirst | DeveloperPublisher | |
| PlayFirst, Inc. | DeveloperPublisher | |
| PlayFishy | Developer | |
| PlayFusion | DeveloperPublisher | |
| PlayKiseki | Developer | |
| PlayLogic International | Publisher | |
| PlayMagic | Developer | |
| PlayMates | Publisher | |
| PlayMedusa | Developer | |
| PlayMocha | Developer | |
| PlayOn Interactive | Publisher | |
| PlayPak | Publisher | |
| PlayStation C.A.M.P. | Developer | |
| PlayTechTonics | DeveloperPublisher | |
| PlayWay | DeveloperPublisher | |
| Playable Creatures | Developer | |
| Playables | Developer | |
| Playbrains | Developer | |
| Playcrafting | Developer | |
| Playdead | DeveloperPublisher | |
| Playdigious | Publisher | |
| Playdius | Publisher | |
| Playdius Entertainment | DeveloperPublisher | |
| Player 1 | DeveloperPublisher | |
| Player Wonderful | Developer | |
| Player25748 | Developer | |
| PlayerStudio1 | Developer | |
| Player_Senpai | Developer | |