Companies
- Steamforged Games
- Steel Wool Studios
- SteelSeries
- Steve Jackson Games
- Stoic
- Stormfront Studios
- Strange Loop Games
- Strange Scaffold
- Strategy Analytics
- Strategy First
- Stray Fawn Studio
- Stress Level Zero
- Streum On Studio
- Striking Distance Studios
- Stroboskop
- Studio Drydock
- Studio Ghibli
- Studio Gobo
- Studio Liverpool
- Studio MDHR
- Studio Wildcard
- Stunlock Studios
- Stupid Fun Club
- Subcreation Studio
- Subutai Corporation
- Success
- Sucker Punch
- Sucker Punch Productions
- Sumo Digital
- Sunblink Entertainment
- Sunset Visitor
- Super Awesome Hyper Dimensional Mega Team
- Super Creative Inc
- Super Rare Originals
- Superbot Entertainment
- Superbrothers
- Supercell
- Supergiant Games
- SUPERHOT Team
- Supermassive Games
- Superscape
- Supertrick Games
- Surgent Studios
- Surprise Attack
- Survios
- Suspicious Developments
- Switchblade Monkeys
- Sword & Axe LLC
- Swordfish Studios
- Swordtales