| Sproing Media | Developer | |
| Sproing Media GmbH | Developer | |
| Sprout Games | Developer | |
| SprovGames | Developer | |
| Spry Fox | DeveloperPublisher | |
| SpryGames | Developer | |
| Sprytes | Developer | |
| Spuggiehawk | Developer | |
| SpyderByteStudios | Developer | |
| Spyounet | Developer | |
| Spyr | Developer | |
| Spyr of the Apocalypse | Developer | |
| SpyroL7 | Developer | |
| Sqeek Songplay | Developer | |
| Squabix | Developer | |
| Squad | DeveloperPublisher | |
| Squall413 | Developer | |
| Squall927 | Developer | |
| Squall_dk | Developer | |
| SquameGames | Developer | |
| Squanch Games | DeveloperPublisher | |
| Squape | Developer | |
| Square | DeveloperPublisher | |
| Square (JP/NA) | Publisher | |
| Square (NA) | Publisher | |
| Square Co | DeveloperPublisher | |
| Square Co. | DeveloperPublisher | |
| Square Co., Ltd. | Developer | |
| Square Co., Ltd. (Japanese Release) | Publisher | |
| Square Co., Ltd.JP | Publisher | |
| Square EA | Publisher | |
| Square EAJP | Publisher | |
| Square EANA | Publisher | |
| Square Electronic Arts | Publisher | |
| Square Electronic Arts (USA Release) | Publisher | |
| Square Electronic ArtsUS | Publisher | |
| Square Enix | DeveloperPublisher | |
| Square Enix (Japan) | Publisher | |
| Square Enix Collective | Publisher | |
| Square Enix Europe | Publisher | |
| Square Enix Montréal | Developer | |
| Square Enix(Japan) | Publisher | |
| Square EnixAU,JP,NA | Publisher | |
| Square EnixJP | Publisher | |
| Square EnixJP,NA | Publisher | |
| Square EnixKO,NA | Publisher | |
| Square EnixNA | Publisher | |
| Square EnixPAL | Publisher | |
| Square Europe (European Release) | Publisher | |
| Square Games | Developer | |
| Square Heads Games | Developer | |
| Square Table Games | Developer | |
| Square-Enix | DeveloperPublisher | |
| SquareCircle | Developer | |
| SquareDev | Developer | |
| SquareFox | Developer | |
| SquareSoft | DeveloperPublisher | |
| SquareSoftAS,JP | Publisher | |
| SquareSoftJP | Publisher | |
| SquareSoftJP,NA | Publisher | |
| Squaregames | Developer | |
| Squarehead Games | DeveloperPublisher | |
| Squaresoft | DeveloperPublisher | |
| Squareworx Studio | Developer | |
| Squeezebotjam | Developer | |
| Squeydar | Developer | |
| Squid Games | Developer | |
| Squid Inc. | Developer | |
| Squid Inc. Productions | Developer | |
| SquidCastle | Developer | |
| SquidInABox | Developer | |
| SquidSinsSquad | Developer | |
| Squiddershins | Developer | |
| Squidly Games | Developer | |
| Squidney | Developer | |
| Squidsheep | Developer | |
| Squinky | Developer | |
| Squire Grooktook | Developer | |
| Squires | Developer | |
| Squirrel | Developer | |
| Squirrel Soft Company | Developer | |
| SquirrelHorse | Developer | |
| Squirrelsoft Studios | Developer | |
| SquishyBear | Developer | |
| SquishyTurtleGames | Developer | |
| Sr Bread | Developer | |
| SrPelo | Developer | |
| Srednuht | Developer | |
| Sreenington | Developer | |
| Sroozy | Developer | |
| SrtaFrost | Developer | |
| Sssnize Game Studios | Developer | |
| St Bride's School | Developer | |
| St0rmCat | Developer | |
| StabAlarash | Developer | |
| Stabalot | Developer | |
| Stabeor | Developer | |
| Stable Alpha | Developer | |
| Stacey Mason | Developer | |
| Stack | Developer | |