| Project XY | Developer | |
| Project99 | Developer | |
| ProjectLevel | Developer | |
| ProjectRed | Developer | |
| ProjectTrinity | Developer | |
| Projectile Entertainment | DeveloperPublisher | |
| Projector Studios | Developer | |
| Projekt_M | Developer | |
| Projeto Abyss | Developer | |
| Projetos Jogos Feevale | Developer | |
| Prokion | Developer | |
| Proletariat | DeveloperPublisher | |
| Prolific | Developer | |
| Prolific Publishing | DeveloperPublisher | |
| Proline Software | Developer | |
| Prologue Games | Developer | |
| Proma | Publisher | |
| Promat, Ltd | Publisher | |
| Promcast Limited | Developer | |
| Promethean Designs | Developer | |
| Promotion Software | Developer | |
| PronoesPro | Developer | |
| Pronto Games | Developer | |
| Propaganda Games | Developer | |
| Prope | Developer | |
| Proper Games | Developer | |
| Prophecia Studios | Developer | |
| ProsciuttoMan | Developer | |
| Prose | Developer | |
| Prosit | Developer | |
| Prosoft | Publisher | |
| Prosoft Corporation | Developer | |
| Prospect Games | Developer | |
| ProstoLyubo | Developer | |
| Prostone | Developer | |
| Proto Co. | Developer | |
| Proto1Studios | Developer | |
| Protohm Games | Developer | |
| Proton Fox | Developer | |
| Proton Squid | Developer | |
| Protoria Studios | Developer | |
| Protostar | Developer | |
| Prototype | DeveloperPublisher | |
| Protovision | Developer | |
| Proud Mom Games | Developer | |
| ProvidedPlay | Developer | |
| ProvidentialPotential | Developer | |
| Prox | Developer | |
| Prozrenue | Developer | |
| Prueba Sprites | Developer | |
| Prullansky | Developer | |
| Prune Games | Developer | |
| Prune Software | Developer | |
| Pryority Software | DeveloperPublisher | |
| Prystic | Developer | |
| Pryzmat | Developer | |
| Pseudavid | Developer | |
| Pseudo Interactive | Developer | |
| PseudoBytes | Developer | |
| PseudoDuo | Developer | |
| PseudoGamer01 | Developer | |
| Pseudome | Developer | |
| Pseudonym_Tim | Developer | |
| Pseudostew | Developer | |
| Pseudotom | Developer | |
| Psikyo | DeveloperPublisher | |
| PsikyoJP | Publisher | |
| Psilocybe Games | Developer | |
| Psion | Publisher | |
| Psion Software Ltd | Developer | |
| Psion Software Ltd (Steve Kelly) | Developer | |
| Psionic Games | Developer | |
| Psionic Systems | Developer | |
| Psiyko | Developer | |
| Psy-Sci (Tayo Olowu, Paul Voysey) | Developer | |
| PsyAc | Developer | |
| PsyRob | Developer | |
| PsycHead | Developer | |
| Psychefunk | Developer | |
| Psychic Software | DeveloperPublisher | |
| PsychicDamage | Developer | |
| Psycho | Developer | |
| Psycho-Soft | Developer | |
| PsychoFlux Entertainment | Developer | |
| PsychoHazard Software | DeveloperPublisher | |
| PsychoMoustache | Developer | |
| PsychoPatoune | Developer | |
| PsychoSeel | Developer | |
| PsychoWren | Developer | |
| Psychronic | Developer | |
| Psyclapse | Publisher | |
| Psyclone | Publisher | |
| Psycon Software | Publisher | |
| Psygnosis | DeveloperPublisher | |
| Psygnosis (EU) | Publisher | |
| PsygnosisEU | Publisher | |
| PsygnosisPAL | Publisher | |
| Psylodge | Developer | |
| Psyonix | DeveloperPublisher | |
| Psyonix Studios | Developer | |
| Psyop | Developer | |
| Psyop Games | Developer | |
| Psytronik Software | Developer | |
| Psyworks Co. Ltd. | Developer | |
| Pterodon | Developer | |
| Pterodon Software | Developer | |
| Ptimiya | Developer | |
| PtitPoly | Developer | |
| Publishing International | DeveloperPublisher | |
| PuccaNoodles | Developer | |
| Puchalla | Developer | |
| PuddleInteractive | Developer | |
| Puddlehead Creations | Developer | |
| Puddleside | Developer | |
| Puddygum | Developer | |
| Pudlo | Developer | |
| Pue-Tsuâ | Developer | |
| PuffPastryPrince | Developer | |
| Pug Fugly Games | Developer | |
| PugByte | Developer | |
| Pugcorn | Developer | |
| Pugland | Publisher | |
| Pugsley | DeveloperPublisher | |
| PukieDiederik | Developer | |
| Pukka Games | Developer | |
| PulPul Games | Developer | |
| Pulga Escapista | Developer | |
| Pulie03 | Developer | |
| Pulkit Bhandari | Developer | |
| Pulkit06 | Developer | |
| Pullsar | Developer | |
| Pulltop | Developer | |
| Pulsar Interactive | Developer | |
| Pulsatrix Studios | Developer | |
| Pulse Entertainment | DeveloperPublisher | |
| Pulse Interactive | Developer | |
| Pulsetense Games | Developer | |
| Pulsmo | DeveloperPublisher | |
| Puma | Developer | |
| Pumo | DeveloperPublisher | |
| Pumpkin | Developer | |
| Pumpkin Games | DeveloperPublisher | |
| Pumpkin Studios | Developer | |
| PumpkinGames | Developer | |
| PumpkinKingIsDead | Developer | |
| Pumpli | Developer | |
| Puncake | Developer | |
| Punch Punk Games | Developer | |
| PunchAbove | Developer | |
| Punchers Impact | Developer | |
| Punchey | Developer | |
| Punchline | Developer | |
| Pungeroo | Developer | |
| Punished Félix | Developer | |
| PunisherXA | Developer | |
| Punk Development | Developer | |
| Punk Notion | DeveloperPublisher | |
| Punkitt | Developer | |
| Puntarr | Developer | |
| PunxelTeam | Developer | |
| Puny Human | DeveloperPublisher | |
| Puppet Combo | Developer | |
| Puppet Studios | Developer | |
| PuppetButtonGames | Developer | |
| Puppy Games | Developer | |
| Puppygames | Developer | |
| Pure Entertainment | Developer | |
| Pure Illusions | Developer | |
| Pure Jam Games | Developer | |
| Pure Sound | DeveloperPublisher | |
| Pure SoundJP | Publisher | |
| PureSim Software Studios | Developer | |
| Purin Productions | Developer | |
| Purler | Developer | |
| Purple Clam | Developer | |
| Purple Hills | DeveloperPublisher | |
| Purple Lamp Studios | Developer | |
| Purple Moon | DeveloperPublisher | |
| Purple Software | DeveloperPublisher | |
| Purple Tree Studio | Developer | |
| PurpleBread | Developer | |
| PurpleCowGames | Developer | |
| PurpleDogGames | Developer | |
| PurpleGamesStudio | Developer | |
| PurpleSea | Developer | |
| PurpleSloth | Developer | |
| PurplefinNeptuna | Developer | |
| Purplex | Developer | |
| PurrSum | Developer | |
| Pursky | Developer | |
| Puru | Developer | |
| Puru32 | Developer | |
| Pusheeneiro | Developer | |
| Pussy CAT | DeveloperPublisher | |
| Puszke | Developer | |
| Putawan Tanadol Deachprapakorn | Developer | |
| PutriCendikia | Developer | |
| Puuba | Developer | |
| Puya Arts | DeveloperPublisher | |
| PuzzSoft | Developer | |