The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Xseed Games (Publisher) (6 members)
- Yacht Club Games (Developer) (1 member)
- Yacht Club Games (Publisher) (1 member)
- Yager Development (Developer) (1 member)
- Yakuza (Series) (9 members)
- Yamasa (Developer) (2 members)
- Yamasa (Publisher) (1 member)
- Yamasa Digi (Series) (2 members)
- Yeah (Developer) (1 member)
- Yeti (Developer) (1 member)
- Yeti (Publisher) (1 member)
- Yoostar Entertainment (Publisher) (1 member)
- Yu-Gi-Oh! (Series) (2 members)
- Yuke's (Developer) (17 members)
- Yuke's (Publisher) (2 members)
- ZCULL accuracy: Approximate (Config) (8 members)
- ZCULL accuracy: Precise (Config) (7 members)
- ZCULL accuracy: Relaxed (Config) (40 members)
- Zen Pinball (Series) (2 members)
- Zen Studios (Developer) (8 members)
- Zen Studios (Publisher) (4 members)
- Zereo (Developer) (1 member)
- ZeroDiv (Developer) (2 members)
- Zeroscale (Developer) (1 member)
- Zeroscale (Publisher) (1 member)
- Zindagi Games (Developer) (3 members)
- Zipper Interactive (Developer) (2 members)
- Zoink (Developer) (1 member)
- Zombie Apocalypse (Series) (2 members)
- Zombie Studios (Developer) (4 members)
- Zoo Games (Publisher) (1 member)
- Zoonami (Developer) (1 member)
- ZootFly (Developer) (3 members)
- Zoë Mode (Developer) (10 members)
- Zuxxez Entertainment (Developer) (1 member)
- Âge (Developer) (5 members)
- Étranges Libellules (Developer) (2 members)
- エクシング (Developer) (1 member)