The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- SNK (Developer) (2 members)
- SNK Playmore (Developer) (13 members)
- SNK Playmore (Publisher) (18 members)
- SOCOM (Series) (2 members)
- SPU block size: Mega (Config) (26 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) (8 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)
- Saw (Series) (2 members)
- Scene It? (Series) (2 members)
- Schlag den Raab (Series) (2 members)
- Science Adventure (Series) (8 members)
- Scientifically Proven (Developer) (1 member)
- Scientifically Proven (Publisher) (1 member)
- Seaven Studio (Developer) (1 member)
- Seaven Studio (Publisher) (1 member)
- Secret Level (Developer) (3 members)
- Section 8 (Series) (2 members)
- Seed Studios (Developer) (1 member)
- Sega (Developer) (25 members)
- Sega (Publisher) (108 members)
- Sega AM2 (Developer) (1 member)
- Sega AM3 (Developer) (2 members)
- Sega Racing Studio (Developer) (1 member)
- Sega Rally (Series) (1 member)
- Sega Studios Australia (Developer) (1 member)
- Sega Technical Institute (Developer) (1 member)
- Semanoor International (Publisher) (1 member)
- Semaphore (Developer) (1 member)
- Sengoku Basara (Series) (4 members)
- Sengoku Hime (Series) (4 members)
- Series (265 members)
- Serious Parody (Developer) (1 member)
- Serious Parody (Publisher) (1 member)
- Seven45 Studios (Developer) (1 member)
- Seven45 Studios (Publisher) (1 member)
- SevenOne Intermedia (Developer) (1 member)
- SevenOne Intermedia (Publisher) (1 member)
- Shaba Games (Developer) (1 member)
- Shader mode: Async with Shader Interpreter (Config) (2 members)
- Shader mode: Legacy (singlethreaded) (Config) (6 members)
- Shader mode: Shader Interpreter only (Config) (1 member)
- Shader quality: High (Config) (4 members)
- Shader quality: Low (Config) (1 member)
- Shank (Series) (2 members)
- Shin Hayarigami (Series) (2 members)
- Shindenken (Developer) (1 member)
- Shining (Series) (1 member)
- Shiny Entertainment (Developer) (1 member)
- Shoot 'em up (Genre) (41 members)
- Shooter (Genre) (41 members)
- Side-scroller (Genre) (3 members)
- SideQuest Studios (Developer) (4 members)
- Sideline Amusements (Developer) (1 member)
- Sidhe (Developer) (5 members)
- Sidhe (Publisher) (1 member)
- Sidhe Interactive (Developer) (1 member)
- Sierra Entertainment (Publisher) (1 member)
- Sigma Team (Developer) (1 member)
- Silence all logs: On (Config) (5 members)
- Silent Hill (Series) (3 members)
- Silicon Knights (Developer) (1 member)
- Silicon Studio (Developer) (2 members)
- SilverStar (Developer) (2 members)
- SilverStar (Publisher) (3 members)
- Silverball Studios (Developer) (1 member)
- Simulation (Genre) (16 members)
- SingStar (Series) (28 members)
- Single-player (Game mode) (1,471 members)
- Size Five Games (Developer) (1 member)
- Skate (Series) (3 members)
- SkyFallen Entertainment (Developer) (1 member)
- Skylanders (Series) (6 members)
- Slang (Publisher) (1 member)
- Slant Six Games (Developer) (3 members)
- Sledgehammer Games (Developer) (2 members)
- Sleep timers accuracy: As Host (Config) (20 members)
- Sleep timers accuracy: Usleep Only (Config) (1 member)
- Slightly Mad Studios (Developer) (3 members)
- Slitherine (Developer) (1 member)
- Slitherine (Publisher) (1 member)
- Sly Cooper (Series) (3 members)
- SmackDown vs. Raw (Series) (8 members)
- Smartphone Labs LLC (Publisher) (1 member)
- Sniper: Ghost Warrior (Series) (2 members)
- Sniper Elite (Series) (2 members)
- Snowblind Studios (Developer) (1 member)
- Snowboarding (Genre) (2 members)
- Social simulation (Genre) (2 members)
- Soedesco (Publisher) (1 member)
- Soldner-X (Series) (2 members)
- Sonic Team (Developer) (8 members)
- Sonic Team USA (Developer) (1 member)
- Sonic the Hedgehog (Series) (12 members)
- Sony Computer Entertainment (Publisher) (249 members)
- Sony Online Entertainment (Developer) (4 members)
- Sony Online Entertainment (Publisher) (24 members)
- SoulCalibur (Series) (4 members)
- Souls (Series) (3 members)
- SouthPeak Games (Publisher) (3 members)
- South Park (Series) (1 member)
- Southend Interactive (Developer) (3 members)
- Space Monkey International (Developer) (1 member)
- Spark Unlimited (Developer) (4 members)
- Sparkworkz (Developer) (1 member)
- Sparpweed (Publisher) (1 member)
- Spearhead Games (Developer) (1 member)
- Spelunker (Series) (2 members)
- Spicy Horse (Developer) (1 member)
- Spider-Man (Series) (6 members)
- Spiders (Developer) (4 members)
- Spike (Developer) (4 members)
- Spike Chunsoft (Developer) (3 members)
- Spike Chunsoft (Publisher) (6 members)
- SpinVector (Developer) (1 member)
- SpinVector (Publisher) (1 member)
- Splash Damage (Developer) (1 member)
- Sports (Genre) (266 members)
- Sports Champions (Series) (2 members)
- Sproing Interactive Media (Developer) (2 members)
- Sprout Games (Developer) (1 member)
- Square Enix (Developer) (9 members)
- Square Enix (Publisher) (40 members)
- Stainless Games (Developer) (5 members)
- Stainless Studios (Developer) (1 member)
- Star Ocean (Series) (3 members)
- Starbreeze Studios (Developer) (5 members)
- Start the Party! (Series) (2 members)
- Stealth (Genre) (32 members)
- Stealth Inc. (Series) (2 members)
- Stickmen Studios (Developer) (1 member)
- Stickmen Studios (Publisher) (1 member)
- Sting Entertainment (Developer) (2 members)
- StormBASIC (Developer) (1 member)
- StormBASIC (Publisher) (1 member)
- Straight Right (Developer) (1 member)
- Straight Right (Publisher) (1 member)
- Strange Loop Games (Developer) (1 member)
- Strategy (Genre) (60 members)
- Strawdog Studios (Developer) (1 member)
- Street Fighter (Series) (5 members)
- Strict rendering mode: On (Config) (13 members)
- Studio Saizensen (Developer) (1 member)
- Sucker Punch Productions (Developer) (4 members)
- Sullivan Bluth Interactive (Developer) (1 member)
- Sumo Digital (Developer) (12 members)
- Sunsoft (Publisher) (1 member)
- SuperBot Entertainment (Developer) (1 member)
- SuperVillain Studios (Developer) (2 members)
- Super Robot Wars (Series) (7 members)
- Super X Studios (Developer) (1 member)
- Superbike World Championship (Series) (3 members)
- Superflat Games (Developer) (1 member)
- Supermassive Games (Developer) (8 members)
- Supersonic Software (Developer) (1 member)
- Survival (Genre) (4 members)
- Survival horror (Genre) (37 members)
- Swordfish Studios (Developer) (1 member)
- Syberia (Series) (2 members)
- Synetic (Developer) (2 members)
- SystemSoft Alpha (Developer) (13 members)
- SystemSoft Alpha (Publisher) (13 members)
- System 3 (Developer) (1 member)
- System 3 (Publisher) (6 members)
- System Prisma (Developer) (1 member)
- THQ (Publisher) (55 members)
- THQ Digital Studios UK (Developer) (1 member)
- THQ Nordic (Publisher) (8 members)
- THQ San Diego (Developer) (1 member)
- THQ Studio Australia (Developer) (2 members)
- TREVA Entertainment (Publisher) (1 member)
- TSX instructions: Disabled (Config) (5 members)
- TT Fusion (Developer) (5 members)
- TT Games (Developer) (1 member)
- Tactical (Genre) (1 member)
- Tactical role-playing (Genre) (27 members)
- Taito (Developer) (3 members)
- Taito (Publisher) (1 member)
- Tales (Series) (6 members)
- Tales From Space (Series) (2 members)
- Tamsoft (Developer) (7 members)
- Tango Gameworks (Developer) (1 member)
- Targem Games (Developer) (5 members)
- Targem Games (Publisher) (2 members)
- Tarsier Studios (Developer) (1 member)
- TastyPlay (Developer) (1 member)
- Tate Multimedia (Developer) (1 member)
- Tate Multimedia (Publisher) (1 member)
- Team17 (Developer) (12 members)
- Team17 (Publisher) (9 members)
- Team6 Game Studios (Developer) (1 member)
- Team Bondi (Developer) (1 member)
- Team Ninja (Developer) (4 members)
- Team Shinobi (Developer) (2 members)
- Tears to Tiara (Series) (3 members)
- Techland (Developer) (7 members)
- Techland (Publisher) (2 members)
- Tecmo (Publisher) (2 members)
- Tecmo Koei (Publisher) (1 member)
- Teenage Mutant Ninja Turtles (Series) (4 members)
- Tekken (Series) (6 members)
- Televisa Home Entertainment (Publisher) (1 member)
- Telltale Games (Developer) (17 members)
- Telltale Games (Publisher) (16 members)
- Templates (22 members)
- Terminal Reality (Developer) (3 members)
- Terrible Posture Games (Developer) (1 member)
- Test Drive (Series) (2 members)
- Teyon (Developer) (4 members)
- Thatgamecompany (Developer) (6 members)
- The Adventure Company (Developer) (1 member)
- The Adventure Company (Publisher) (1 member)
- The Bearded Ladies Consulting (Developer) (1 member)
- The Behemoth (Developer) (1 member)
- The Bigs (Series) (2 members)
- The Darkness (Series) (2 members)
- The Elder Scrolls (Series) (2 members)
- The Farm 51 (Developer) (2 members)
- The Fyzz Facility (Publisher) (1 member)
- The Godfather (Series) (1 member)
- The House of the Dead (Series) (3 members)
- The Idolmaster (Series) (5 members)
- The King of Fighters (Series) (5 members)
- The Legend of Heroes (Series) (6 members)
- The Lord of the Rings (Series) (1 member)
- The Muteki Corporation (Developer) (2 members)
- The Muteki Corporation (Publisher) (2 members)