The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Tomb Raider (Series) (4 members)
- Tony Hawk's (Series) (6 members)
- Top-down shooter (Genre) (5 members)
- TopWare Interactive (Publisher) (3 members)
- Top Spin (Series) (2 members)
- Topware Interactive (Publisher) (1 member)
- Torn Banner Studios (Developer) (1 member)
- Torn Banner Studios (Publisher) (1 member)
- Torus Games (Developer) (4 members)
- Torus Games (Publisher) (1 member)
- Tose (Developer) (1 member)
- Tower defense (Genre) (15 members)
- Toxic Games (Developer) (1 member)
- Toxic Games (Publisher) (1 member)
- Toy Story (Series) (1 member)
- Toybox Inc. (Developer) (1 member)
- Toys for Bob (Developer) (4 members)
- Tozai Games (Publisher) (3 members)
- Tragnarion Studios (Developer) (1 member)
- Trails (Series) (1 member)
- Train Simulator (Genre) (2 members)
- Train Simulator (Series) (2 members)
- Transformers (Series) (7 members)
- Transmission Games (Developer) (2 members)
- Trapdoor (Developer) (1 member)
- Trapdoor (Publisher) (1 member)
- Traveller's Tales (Developer) (16 members)
- Treasure Co. (Developer) (1 member)
- Trendy Entertainment (Developer) (1 member)
- Treyarch (Developer) (8 members)
- Tri-Ace (Developer) (4 members)
- Tri-Crescendo (Developer) (2 members)
- Trickstar Games (Developer) (3 members)
- Trine (Series) (2 members)
- Trine Games (Developer) (3 members)
- Trion Worlds (Developer) (1 member)
- Trion Worlds (Publisher) (1 member)
- Triumph Studios (Developer) (1 member)
- Trivia (Genre) (26 members)
- Tru Blu Entertainment (Publisher) (9 members)
- Turn-based (Genre) (1 member)
- Turn-based tactics (Genre) (4 members)
- Two Tribes (Developer) (1 member)
- UFC Undisputed (Series) (3 members)
- UFO Interactive Games (Publisher) (3 members)
- UIG Entertainment (Publisher) (1 member)
- UNKNOWN GAMES (Developer) (2 members)
- Ubisoft (Developer) (10 members)
- Ubisoft (Publisher) (101 members)
- Ubisoft Blue Byte (Developer) (1 member)
- Ubisoft Bucharest (Developer) (4 members)
- Ubisoft Milan (Developer) (3 members)
- Ubisoft Montpellier (Developer) (5 members)
- Ubisoft Montreal (Developer) (23 members)
- Ubisoft Paris (Developer) (2 members)
- Ubisoft Pune (Developer) (1 member)
- Ubisoft Quebec (Developer) (2 members)
- Ubisoft Reflections (Developer) (1 member)
- Ubisoft San Francisco (Developer) (2 members)
- Ubisoft Shanghai (Developer) (8 members)
- Ubisoft Singapore (Developer) (1 member)
- Ubisoft Sofia (Developer) (3 members)
- Ubisoft Toronto (Developer) (1 member)
- Ubisoft Vancouver (Developer) (1 member)
- Ultraman (Series) (1 member)
- Umineko no Naku Koro ni (Series) (2 members)
- Uncharted (Series) (3 members)
- Underground Development (Developer) (2 members)
- United Front Games (Developer) (3 members)
- United Game Artists (Developer) (1 member)
- Unknown/invalid (Release region) (0 members)
- Upper One Games (Developer) (1 member)
- Us! (Developer) (1 member)
- UserJoy Technology (Developer) (1 member)
- Userjoy Technology (Developer) (1 member)
- Userjoy Technology (Publisher) (1 member)
- Utawarerumono (Series) (2 members)
- VBlank NTSC Fixup: On (Config) (1 member)
- VSync: On (Config) (1 member)
- Valcon Games (Publisher) (4 members)
- Valve (Developer) (2 members)
- Valve (Publisher) (3 members)
- Vanguard Games (Developer) (1 member)
- Vanillaware (Developer) (2 members)
- Vatra Games (Developer) (2 members)
- Vblank Entertainment (Developer) (2 members)
- Vblank Entertainment (Publisher) (2 members)
- Vblank rate (Config) (30 members)
- VectorCell (Developer) (2 members)
- Vehicular combat (Genre) (14 members)
- Version2Games (Developer) (1 member)
- Vertical scrolling shooter (Genre) (1 member)
- Vertigo Digital Entertainment (Developer) (1 member)
- Vicarious Visions (Developer) (3 members)
- Vicious Cycle Software (Developer) (6 members)
- Vigil Games (Developer) (2 members)
- Virtua Fighter (Series) (2 members)
- Virtua Striker (Series) (1 member)
- Virtua Tennis (Series) (3 members)
- Virtual Air Guitar (Developer) (1 member)
- Virtual Air Guitar (Publisher) (1 member)
- Virtual On (Series) (1 member)
- Virtual World (Genre) (1 member)
- Virtual pet (Genre) (2 members)
- Virtuos (Developer) (2 members)
- Visceral Games (Developer) (12 members)
- Visual Concepts (Developer) (26 members)
- Visual novel (Genre) (67 members)
- Vivendi Games (Publisher) (5 members)
- Vlambeer (Developer) (1 member)
- Vogster Entertainment (Developer) (1 member)
- Vogster Entertainment (Publisher) (1 member)
- Volatile Games (Developer) (1 member)
- Volition (Developer) (7 members)
- VooFoo Studios (Developer) (4 members)
- VooFoo Studios (Publisher) (1 member)
- W!Games (Developer) (1 member)
- WB Games Montréal (Developer) (1 member)
- WHA Entertainment (Publisher) (1 member)
- WRC (Series) (6 members)
- WWE (Series) (12 members)
- Wahoo Studios (Developer) (1 member)
- Wake Up Studios (Developer) (1 member)
- Wales Interactive (Developer) (1 member)
- Wales Interactive (Publisher) (1 member)
- Wanako Games (Developer) (1 member)
- Warhammer 40000 (Series) (3 members)
- Warner Bros. Interactive Entertainment (Publisher) (41 members)
- Warriors Orochi (Series) (2 members)
- WaterMelon (Developer) (1 member)
- WaterMelon (Publisher) (1 member)
- WayForward Technologies (Developer) (9 members)
- Way of the Samurai (Series) (2 members)
- Westone (Developer) (1 member)
- Whirlpool (Developer) (1 member)
- White Knight Chronicles (Series) (2 members)
- Wicked Witch Software (Developer) (2 members)
- Wideload Games (Developer) (2 members)
- Winkysoft (Developer) (1 member)
- Winning Post (Series) (11 members)
- Wired Productions (Developer) (1 member)
- Wired Productions (Publisher) (1 member)
- Wizarbox (Developer) (3 members)
- Wizarding World (Series) (2 members)
- Wizardry (Series) (2 members)
- Wizards of the Coast (Publisher) (4 members)
- Wolfenstein (Series) (3 members)
- Wonder Boy (Series) (3 members)
- Wonderbook (Series) (4 members)
- World Snooker Championship (Series) (2 members)
- Worms (Series) (5 members)
- Wow Entertainment (Developer) (2 members)
- Write color buffers: On (Config) (174 members)
- Write depth buffers: On (Config) (9 members)
- XCOM (Series) (3 members)
- XDev (Developer) (1 member)
- XGen Studios (Developer) (1 member)
- XGen Studios (Publisher) (1 member)
- XING (Developer) (1 member)
- XING (Publisher) (1 member)
- XPEC Entertainment (Developer) (3 members)
- XPEC Entertainment (Publisher) (1 member)
- 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) (37 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)