The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Omni Systems (Developer) (1 member)
- One Piece (Series) (4 members)
- One True Game Studios (Developer) (1 member)
- Ongakukan (Developer) (2 members)
- Ongakukan (Publisher) (2 members)
- Operation Flashpoint (Series) (2 members)
- Orange Juice (Developer) (1 member)
- Other Ocean Interactive (Developer) (3 members)
- Output scaling: FidelityFX Super Resolution (FSR) (Config) (1 member)
- Over The Top Games (Developer) (1 member)
- Overkill Software (Developer) (2 members)
- PAN Vision (Publisher) (1 member)
- PGA Tour (Series) (8 members)
- PPU LLVM Java mode handling: False (Config) (0 members)
- PPU LLVM Java mode handling: True (Config) (0 members)
- PPU LLVM accurate vector NaNs: On (Config) (1 member)
- PPU decoder: Interpreter (static) (Config) (16 members)
- PPU thread count: 1 (Config) (1 member)
- PQube (Publisher) (7 members)
- PSN status: Disconnected (Config) (1 member)
- PSN status: RPCN (Config) (6 members)
- PSN status: Simulated (Config) (2 members)
- PSR Outdoors (Developer) (2 members)
- PSR Outdoors (Publisher) (2 members)
- Pac-Man (Series) (3 members)
- PachiPara (Series) (3 members)
- Pachinko (Genre) (14 members)
- Page 44 Studios (Developer) (1 member)
- Pages using duplicate arguments in template calls (15 members)
- Pages using vgregion with named parameters (1 member)
- Pages with broken file links (1 member)
- Pages with too many expensive parser function calls (0 members)
- Pandemic Studios (Developer) (3 members)
- Paon Corporation (Developer) (1 member)
- Paon Corporation (Publisher) (1 member)
- Papaya Studio (Developer) (2 members)
- Paradigm Entertainment (Developer) (1 member)
- Paradox Interactive (Publisher) (2 members)
- Paramount Digital Entertainment (Publisher) (4 members)
- Party (Genre) (24 members)
- Patches available (243 members)
- Payday (Series) (2 members)
- Pelfast (Developer) (1 member)
- Pelfast (Publisher) (1 member)
- People Can Fly (Developer) (1 member)
- Persona (Series) (3 members)
- Phoenix Studio (Developer) (1 member)
- Pi Studios (Developer) (1 member)
- Piacci (Publisher) (1 member)
- Pieces Interactive (Developer) (2 members)
- Pinball (Genre) (7 members)
- Pipeworks Software (Developer) (6 members)
- Pipeworks Studios (Developer) (1 member)
- Piranha Bytes (Developer) (1 member)
- Piranha Games (Developer) (1 member)
- Pivotal Games (Developer) (1 member)
- PixelJunk (Series) (8 members)
- Pixel Tales (Developer) (1 member)
- Pixelnest Studio (Developer) (1 member)
- Pixelopus (Developer) (1 member)
- Pixolane (Developer) (1 member)
- Pixolane (Publisher) (1 member)
- Plants vs. Zombies (Series) (1 member)
- Plastic (Developer) (2 members)
- Platform (Genre) (168 members)
- Platine Dispositif (Developer) (1 member)
- PlatinumGames (Developer) (7 members)
- PlayStation 3 exclusive (Release type) (304 members)
- PlayStation exclusive (Release type) (186 members)
- Playbrains (Developer) (2 members)
- Playdead (Developer) (1 member)
- Playdead (Publisher) (1 member)
- Playlogic Entertainment (Developer) (4 members)
- Playlogic Entertainment (Publisher) (1 member)
- Playlogic Game Factory (Developer) (1 member)
- Playlogic International (Publisher) (1 member)
- Playrix Entertainment (Developer) (1 member)
- Plug In Digital (Publisher) (1 member)
- Plunge Interactive (Developer) (1 member)
- Point-and-click (Genre) (13 members)
- Point of View (Developer) (1 member)
- Polyphony Digital (Developer) (5 members)
- Polytron Corporation (Developer) (1 member)
- PomPom Games (Developer) (1 member)
- PomPom Software (Developer) (1 member)
- PomPom Software (Publisher) (1 member)
- PopCap Games (Developer) (7 members)
- PopCap Games (Publisher) (5 members)
- Power Pros Production (Developer) (10 members)
- Power and Magic Development (Developer) (1 member)
- Preferred SPU threads (Config) (6 members)
- Premium Agency (Developer) (1 member)
- Press Play (Developer) (1 member)
- Press Play (Publisher) (1 member)
- Prince of Persia (Series) (4 members)
- Pro Evolution Soccer (Series) (11 members)
- Professional Baseball Spirits (Series) (9 members)
- Project Aces (Developer) (2 members)
- Project Soul (Developer) (1 member)
- Propaganda Games (Developer) (2 members)
- Prope (Developer) (1 member)
- Proper Games (Developer) (1 member)
- Prototype (Publisher) (4 members)
- Prototype (Series) (2 members)
- Pseudo Interactive (Developer) (1 member)
- Psyonix (Developer) (2 members)
- Psyonix (Publisher) (1 member)
- Publishers (137 members)
- Puppy Games (Developer) (2 members)
- Puzzle (Genre) (132 members)
- Puzzle Quest (Series) (3 members)
- Pwnee Studios (Developer) (1 member)
- Pyro Studios (Developer) (1 member)
- Q-Games (Developer) (8 members)
- Q-Games (Publisher) (5 members)
- QV Software (Publisher) (1 member)
- Q Entertainment (Developer) (3 members)
- Q Entertainment (Publisher) (3 members)
- QuByte Interactive (Developer) (1 member)
- QuByte Interactive (Publisher) (1 member)
- Quantic Dream (Developer) (2 members)
- Queasy Games (Developer) (2 members)
- Quirkat (Developer) (1 member)
- Quirkat (Publisher) (1 member)
- RSX FIFO accuracy: Atomic (Config) (67 members)
- RSX FIFO accuracy: Ordered & Atomic (Config) (4 members)
- RTL Interactive (Publisher) (1 member)
- Racing (Genre) (149 members)
- Radical Entertainment (Developer) (2 members)
- Rail shooter (Genre) (21 members)
- Rain Games (Developer) (1 member)
- Rain Games (Publisher) (1 member)
- Rainbow (Series) (2 members)
- Rainbow Studios (Developer) (4 members)
- Ratchet & Clank (Series) (8 members)
- Ratchet & Clank Future (Series) (4 members)
- Ratloop (Developer) (1 member)
- Ratloop (Publisher) (1 member)
- Raven Software (Developer) (4 members)
- Ravn Studio (Developer) (1 member)
- Rayman (Series) (1 member)
- Re-Logic (Developer) (1 member)
- Read color buffers: Off (Config) (1 member)
- Read color buffers: On (Config) (36 members)
- Read depth buffers: On (Config) (6 members)
- Ready at Dawn (Developer) (1 member)
- Real-time strategy (Genre) (2 members)
- Real-time tactics (Genre) (2 members)
- Reality Pump (Developer) (2 members)
- Realta Entertainment Group (Developer) (1 member)
- Rebellion Developments (Developer) (7 members)
- Recoil Games (Developer) (1 member)
- Recom (Developer) (1 member)
- Recom (Publisher) (2 members)
- Record of Agarest (Series) (3 members)
- Red Dead (Series) (2 members)
- Red Entertainment (Developer) (2 members)
- Red Faction (Series) (3 members)
- Red Fly Studio (Developer) (1 member)
- Red Hare Studios (Developer) (1 member)
- Red Hare Studios (Publisher) (1 member)
- Red Johnson's Chronicles (Series) (2 members)
- Red Storm Entertainment (Developer) (1 member)
- Redoubt (Developer) (1 member)
- Reef Entertainment (Publisher) (2 members)
- Reflexive Entertainment (Developer) (1 member)
- Reflexive Entertainment (Publisher) (1 member)
- Regionless release date parameter (Infobox) (138 members)
- Regista (Developer) (2 members)
- Release format (3 members)
- Release region (4 members)
- Release type (4 members)
- Relentless Software (Developer) (6 members)
- Relentless Software (Publisher) (1 member)
- Relic Entertainment (Developer) (1 member)
- Renderer: OpenGL (Config) (3 members)
- Renderer: Vulkan (Config) (0 members)
- Renegade Kid (Developer) (1 member)
- Renegade Kid (Publisher) (1 member)
- Resident Evil (Series) (11 members)
- Resistance (Series) (3 members)
- Resolution scale (Config) (18 members)
- Resolution scale threshold (Config) (40 members)
- Reverb Publishing (Publisher) (2 members)
- Reverb Triple XP (Publisher) (1 member)
- Reverge Labs (Developer) (1 member)
- Rhino Studios (Developer) (1 member)
- Rhythm (Genre) (104 members)
- Ridge Racer (Series) (2 members)
- Right Square Bracket Left Square Bracket (Developer) (1 member)
- Right Square Bracket Left Square Bracket (Publisher) (1 member)
- Ripstone (Developer) (1 member)
- Ripstone (Publisher) (4 members)
- Risen (Series) (2 members)
- Rising Star Games (Publisher) (5 members)
- Risk (Series) (2 members)
- Robomodo (Developer) (4 members)
- Rock Band (Series) (12 members)
- Rockin' Android (Publisher) (1 member)
- Rocksmith (Series) (2 members)
- Rockstar Games (Developer) (8 members)
- Rockstar Games (Publisher) (9 members)
- Rocksteady Studios (Developer) (2 members)
- Roguelike (Genre) (1 member)
- Role-playing (Genre) (93 members)
- Roll7 (Developer) (1 member)
- Roll7 (Publisher) (1 member)
- Rombax Games (Publisher) (3 members)
- Ronimo Games (Developer) (2 members)
- Ronimo Games (Publisher) (1 member)
- Route 1 Games (Developer) (1 member)
- Rovio Entertainment (Developer) (2 members)
- Rugby Challenge (Series) (3 members)
- Rugby League (Series) (2 members)
- Ryu Ga Gotoku Studio (Developer) (8 members)
- SCE Japan Studio (Developer) (1 member)
- SCE San Diego Studio (Developer) (1 member)
- SCE Santa Monica Studio (Developer) (7 members)
- SCE Studio Liverpool (Developer) (2 members)
- SNK (Developer) (2 members)
- SNK Playmore (Developer) (13 members)
- SNK Playmore (Publisher) (18 members)
- SOCOM (Series) (2 members)
- SPU block size: Mega (Config) (27 members)
- SPU block size: Safe (Config) (3 members)
- SPU decoder: Interpreter (static) (Config) (2 members)
- SPU decoder: Recompiler (ASMJIT) (Config) (7 members)
- SPU decoder: Recompiler (LLVM) (Config) (0 members)
- SPU xfloat accuracy: Accurate (Config) (5 members)
- SPU xfloat accuracy: Approximate (Config) (4 members)
- SPU xfloat accuracy: Relaxed (Config) (9 members)
- SYNC (Developer) (1 member)
- Saber Interactive (Developer) (3 members)
- Sacred (Series) (3 members)
- Saint Seiya (Series) (3 members)
- Saints Row (Series) (4 members)
- Sam & Max (Series) (2 members)
- Sammy Corporation (Developer) (1 member)
- Samurai Warriors (Series) (7 members)
- San Diego Studio (Developer) (18 members)
- Sand Grain Studios (Developer) (3 members)
- Sandblast Games (Developer) (1 member)
- Sandbox (Genre) (7 members)
- Sandlot (Developer) (1 member)
- Sangoku Hime (Series) (1 member)
- Sangokushi (Series) (2 members)
- Sanuk Games (Publisher) (1 member)
- Sanzaru Games (Developer) (3 members)
- Sarbakan (Developer) (1 member)
- Saurus (Developer) (1 member)