The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- 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)