Saber Interactive
Saffire
Sanctuary Woods
Sand Grain Studios
Sandlot Games
Santa Cruz Games
Sarbakan
SB Software
SCEE
Sci
Secret Level
SeekerTeam
Sega
Seika
SEK
Selectsoft
Sensible Software
Sentient Software
Seppia Interactive
Shaba Games
Shadow Tor Studios
Shiny
Shockwave
Shrapnel Games
Sidewalk Software
Sidhe
Sierra
Sigma Team
Silicon Dreams
Silicon Knights
Sillysoft
Silver Creek Entertainment
Simon & Schuster
SimTex
Simulated Environment Systems
Simulsoft
Simutronics
Sirius Software
SirTech
Ska Software
Skunk Studios
SkyFallen Entertainment
Skyriver Studios
SkyZone Entertainment
Sleepless Software
Slick Software
Small Rockets
Smayds
SMERC Design
Smoking Car Productions
SNK
Snowblind Studios
Soft Images
Soft Spot Micro Systems
Softape
Softcore Software
Softdisk
Softoogle
Softsync
Softwar III
Software Creations
Software Projects
Software Toolworks
Sold-Out Software
SOMC
Sony
SourceForge
SouthPeak Interactive
Sozobon
Space-Time Associates
Sparkle Productions
Spark
Spectral Associates
Spectrum Computers
Spectrum Holobyte
Spellbound
Spiderweb Software
SPIG
Spinnaker
SpinTop Games
Spiral Software
SpiteNET
Splash Damage
Spotlight Software
Springboard Software
Square Enix
SquareSoft
SSG
SSI
SSM
Stainless Steel Studios
Star Games
Star Graphics
Starbreeze Studios
Stardock Entertainment
Starpath Corporation
Stars Dev Company
StarSphere
Steam
Sterling Silver Software
Sting
Stoneware
Storm City Entertainment
Stormfront Studios
Strategy First
Strategy Lights Systems
Subjunctive Software
SubLOGIC
Sucker Punch
Sulus Games
Sunflowers Interactive
Sunspire Studios
Sunstorm Interactive
Super Fighter Team
Supergiant Games
Supersoft Associates
SuperVillain Studios
Supervillian Studios
Suricate Software
Surreal Software
Sushi Quest Team
SVG Distribution
Sweet Tooth Games
Sydney Development
Symtus
Synapse Software
Synergistic Software
Synware Games
Syrox
System 3
Syzygy Engineering
Note: bolded names indicate companies that released a game within the last twelve months.