Companies starting with S
- S-Game
- S2 Games
- Saber Interactive
- Sabotage Studio
- Sabrent
- Sad Cat Studios
- Sad Owl Studios
- SAG-AFTRA
- Salty Games
- Sam Barlow
- SamanSpades
- Samsung Electronics
- Samurai Punk
- SanDisk
- Sandlot
- Sandman Team
- Santa Monica Studio
- Santa Ragione
- Sapphire
- SapStar Games
- Sarnayer
- Sassy Chap Games
- Savage Entertainment
- SayGames
- Scavengers Studio
- Schell Games
- Schmidt Workshops
- SCS Software
- Seagate
- Second Dinner
- Secret Mode
- Sega
- SEGA Australia
- SEGA Corporation
- SEGA Europe
- SEGA Hardlight
- SEGA Japan
- SEGA of America
- Sega Sammy Holdings
- Semiwork
- SenAm Games
- Serenity Forge
- SFB Games
- Shape Shop
- Shared Memory
- Sharkmob
- Shedworks
- Sheinman Games
- Shift
- Shift Up Corporation
- Shining Rock Software
- Shiny Entertainment
- Shiny Shoe
- Shiro Games
- Shiro Unlimited
- Shiver Games
- Shrapnel Games
- Shueisha Games
- Siege Camp
- Sierra Entertainment
- Sierra Online
- Signal Studios
- Sigono Inc
- Silent Chicken
- SilverBirch Studios
- Silverstring Media
- Simogo
- Simtex
- simulinati
- SinginGiant
- Singularity 6
- Sir-Tech Canada
- Siris Pendrake
- Sirvo
- Sixense Entertainment
- Size Five Games
- SK Hynix
- Ska Studios
- Sketchy Logic Games
- Skybound
- SkyBox Labs
- Skydance Interactive
- Skydance New Media
- Skyreach Studio
- Skystone Games
- Slant Six Games
- Slavic Magic
- Sledgehammer Games
- Slick Entertainment
- Slightly Mad Studios
- Slipgate Ironworks
- Slitherine Software UK
- Sloclap
- Slormite Studios
- Slothwerks
- Slow Bros.
- SmallBü
- Smartly Dressed Games
- Smilegate
- Smilegate Entertainment
- Snail Games
- Snail Games USA
- Snapshot Games
- Sneaky Yak Studios
- SNEG
- SNK
- Snowbird Game Studios
- Snowman
- So Romantic
- Sobaka
- Soda Den
- softbank
- Sold Out
- Soleil Ltd.
- Soleil Noir
- Solid Clouds
- Solidigm
- SomeHumbleOnion
- Something Wicked Games
- SomethingExtra
- Sonderland
- Sonic Team
- Sonka
- Sony
- Sony Bend
- Sony Computer Entertainment
- Sony Computer Entertainment Europe
- Sony Interactive Entertainment
- Sony Online Entertainment
- Sony Pictures
- Sony PlayStation
- Sony Santa Monica
- Sorath
- Source VR Mod Team
- Space Capsule Games
- Sparrow Night
- Spearhead Games
- SpecialEffect
- Spellcast Studios
- Spellgarden Games
- Spicy Horse
- Spiderling Studios
- Spiders
- Spiderweb Software
- Spike Chunsoft
- Spike Co., Ltd.
- Spiral Circus
- Spiral Game Studios
- Spiral House
- Spiral Up Games
- Spirit AI
- Splash Damage
- Spoonful Of Wonder
- Sports Interactive
- Spotlightor Interactive
- Spry Fox
- Spytihněv
- Squad
- Squanch Games
- Square Enix
- Square Enix Collective
- Square Enix Europe
- Square Enix Montréal
- Square Glade Games
- Squaresoft
- Squid Shock Studios
- Stainless Games
- Stairway Games
- Standing Stone Games
- Star Drifters
- Star Garden Games
- Star Vault
- Starbreeze Studios
- Stardock
- Stardock Corporation
- Starlight Games
- Starry Studio
- Starsoft Entertainment
- Starward Industries
- StarWraith 3D Games
- State of Play
- Steamforged Games
- Steel Wool Studios
- SteelSeries
- Stellar Jockeys
- stellarNull
- Steve Jackson Games
- Steve Swink
- StikiPixels
- Stitch Heads Entertainment
- Stoic
- Stoked Sloth Interactive
- Stonewheat & Sons
- straka.studio
- Strange Loop Games
- Strange Scaffold
- Strategy First
- Stray Fawn Studio
- Stress Level Zero
- Streum On Studio
- Striking Distance Studios
- Stroboskop
- Studio Any Percent
- Studio Circenses
- Studio Evil
- Studio Fizbin
- Studio Ghibli
- Studio Iggymob
- Studio LEF
- Studio MDHR
- Studio Mechka
- Studio Oleomingus
- Studio Pixel Punk
- Studio Plane Toast
- Studio Sai
- Studio Seufz
- Studio Supersoft
- Studio Wildcard
- Stuffed Wombat
- Stunlock Studios
- Stupid Fun Club
- Stygian Software
- Subcreation Studio
- Subutai Corporation
- Success
- Sucker Punch Productions
- Sulake
- Summerfall Studios
- Sumo Digital
- Sundew Studios
- Sunny Side Up
- Sunsoft
- Super Awesome Hyper Dimensional Mega Team
- Super Flower
- Super Rare Originals
- Superbrothers
- Supercell
- Superday
- Supergiant Games
- SUPERHOT Team
- Supermassive Games
- Supernova Capital
- Superscape
- Supertrick Games
- Suppressive Fire Games
- SureAI
- Surefire.Games
- Surgent Studios
- Surprise Attack
- Surt
- Suspicious Developments
- Sutemi Productions
- Swing Swing Submarine
- SYCK
- System 3