| Sunflowers Interactive Entertainment | DeveloperPublisher | |
| Sunflowers Interactive Entertainment Software | DeveloperPublisher | |
| Sunglass Boys | Developer | |
| Sungrand Studios | DeveloperPublisher | |
| Sungrazer Studio | Developer | |
| Sunhead Games | Developer | |
| Sunken Squid | Developer | |
| Sunless | Developer | |
| Sunlight Games | DeveloperPublisher | |
| Sunlit-Dreamer | Developer | |
| Sunny Go Wild | Developer | |
| Sunny Penguin Games | Developer | |
| Sunny Valley Studio | Developer | |
| SunnyChow | Developer | |
| SunnysGroup | Developer | |
| Sunnyside Soft | Developer | |
| Sunrise | DeveloperPublisher | |
| Sunrise Games | Developer | |
| Sunrise Interactive | DeveloperPublisher | |
| Sunrise Software | Publisher | |
| SunriseGames | Developer | |
| Sunrock | Developer | |
| SunsCradle | Developer | |
| Sunscale Studios | Developer | |
| Sunset Entertainment | Developer | |
| Sunsoft | DeveloperPublisher | |
| Sunsoft EU | Publisher | |
| Sunsoft JP | Publisher | |
| Sunsoft NA | Publisher | |
| SunsoftJP | Publisher | |
| SunsoftJP/NA | Publisher | |
| SunsoftNA | Publisher | |
| SunsoftNA/JP | Publisher | |
| SunsoftNA/PAL | Publisher | |
| SunsoftPAL | Publisher | |
| Sunspire Studios | Publisher | |
| Sunstorm Interactive | DeveloperPublisher | |
| Sunstruck | Developer | |
| Sunward Games | Developer | |
| Suoish | Developer | |
| Suomen Kotijaatelo Oy | Publisher | |
| SupHernan | Developer | |
| SupMike | Developer | |
| Super Awesome Hyper Dimensional Mega Team | Developer | |
| Super Balrog | Developer | |
| Super Cookie Games | Developer | |
| Super Damage Games | Developer | |
| Super Duper Garrett Cooper | Developer | |
| Super Empire | Developer | |
| Super Fighter Team | Publisher | |