DEVELOPERS
- S-Neo
- S-Plan
- Sabarasa Entertainment
- Sachen
- Sacnoth
- Saffire
- Saffire Corporation
- Sage's Creation
- Sakata SAS
- Sakata SAS / Tenky
- Sales Curve Interactive
- Salio
- Same Creative Inc
- Sammy Entertaiment
- Sammy Entertainment
- Sammy Entertainment Inc
- Sammy Studios
- Samsung
- Sandbox
- Sandbox Studios
- Sandcastle
- Sandlot
- Sankindo
- Sanritsu
- Sanritsu Denki
- Santaclaus
- Santos
- Sanyo
- SAS Sakata
- Saurus
- Scangames Norway
- Scarab
- Scavenger
- SCE Studio Soho
- SCEE Cambridge Studios
- SCI
- SCi Entertainment Group
- SCi (Sales Curve Interactive)
- Scitron & Art
- Scoreboard Productions
- Sculptured Software
- Sculptured Software, Inc
- Sega
- Sega AM2
- Seibu Kaihatsu
- Seika Corp.
- Selen
- Selen / Prosoft
- Sennari Interactive
- Sensible Software
- Sensible Software / Krisalis Software
- Sensory Sweep
- Serene
- Seta
- Seta Corporation
- Seven Computerized Creations
- SG Difusion / Kung Fu
- Shaba Games
- Shaba Studios
- Shangri-La
- Shen
- Shen Technologies SARL
- Shift
- Shigakusha
- Shimada Kikaku
- Shin'en
- Shinko Music
- Shiny Entertainment
- Shiny Entertainment / Big Grub
- Shiny Entertainment, Inc. / Screaming Pink
- Shoeisha
- Shogakukan
- Shouei
- Shout! Designworks
- Shuwa System
- Sick Puppies
- Siesta
- Sigma Ent. Inc.
- Silence
- Silent Software
- Silicon Dreams
- Silicon Knights
- Silicon Sorcery
- Silicon & Synapse
- Silmarils
- Silver Star
- SilverStar
- Similis
- Simis Ltd
- Sims
- Single Trac Entertainment Tech. Inc
- Singletrac
- Singletrac Entertainment Tech. Inc
- Sinister Games
- Sirius Games
- Sirius Software
- SISA
- Skip Ltd.
- Sky Think System
- Sky Think Systems
- SkyRiver Studios
- Skyworks Technologies
- Slipery Snake Studio
- Small Rockets
- Smart Dog
- Smart Egg Pictures
- Smilebit
- SmileSoft
- SNK
- SNK Corporation
- SNK/ProSoft
- SNK / Ukiyotei
- Snowblind Studios
- Sofel
- Soft Bank
- Soft Machine
- Soft Office
- Soft Pro
- Soft Vision International
- Softie, Inc.
- Software 2000
- Software Creations
- Software Creations Limited
- Software Toolworks
- Sol
- SOL / Bestmedia
- Sol / Studio PJ
- Solid Software
- Soliton / Marionette
- Soliton Soft
- Soliton / Thunder Stone Japan
- Solworks
- Sonic Team
- Sonnet
- Sony
- Sony Computer Entertainment / Activision
- Sony Computer Entertainment America, Inc
- Sony Interactive Studios America
- Sony Music Entertainment
- Sony Music Entertainment Incorporated
- Sony Studio Soho
- Sound Source Interactive / Realtime Associates
- Sound Technology Japan
- Soundelux
- Source
- Source Research & Development
- Sourcery
- South Peak Interactive
- Spark
- Special FX
- Spectrum Holobyte
- Spectrum HoloByte, Inc
- Spellbound
- Sphere
- Spidersoft
- Spiel
- Spike
- Sproing Interactive Media
- Sprytes
- SPS
- Square Enix
- Square USA
- SquareSoft
- SSI
- Stack
- Stalker Entertainment
- Standaard Multimedia
- Starcraft
- Starfish
- Starlight Marry
- Starlight Marry / Acquire
- Starlight Marry / ISCO
- Starsphere Interactive, Inc
- Steel Monkeys
- Sterling Silver Software
- Sting
- Stone Heads (KCEO)
- Stormfront Studios
- Strategic Simulations, Inc
- Studio 3
- Studio 33
- Studio 33 Ltd
- Studio 3DO
- Studio Alex
- Studio CAMDEN
- Studio e
- Studio Fazzy
- Studio ox / ARTSCAPE
- Studio Saizensen
- Studio VeX
- Stunt Puppy Entertainment, Inc.
- Success
- Sucker Punch
- Sugar & Rockets
- Sugar & Rockets / G-Artists
- Sugar & Rockets / Production I.G
- Suiko Team
- Sun L
- Sun-Tec
- Sunflowers
- Sunmark
- Sunrise
- Sunrise Interactive
- Sunrise / Natsume
- SunSoft
- Sunsoft / ASK / Ornith
- Super Empire
- Super Pig
- Supersonic Software
- Supersonic Software Ltd
- Supervision
- Surveyor Corporation
- Suzak
- Symbio / Roman-Tech
- Synapse Software
- Synergistic Software
- Synergy Inc
- Synthetic Dimensions
- Synthetic Dimensions / Veritas Productions
- Syrox Developments
- Syrox Developments, Ltd
- Syscom
- Syscom Entertaiment
- Syscom Entertainment
- System 3
- System 3 Software
- System Create
- System Sacom
- System Supply N-Tech
- System Vision
- SystemSoft
- SystemSoft Co
- Systemsoft / Dual
- Syufo Hitahashi