| Xavier Belanche | Developer | |
| Xavier Ekkel | Developer | |
| Xavier Orion Games | DeveloperPublisher | |
| Xboite720 | Developer | |
| Xbox Game Studios | DeveloperPublisher | |
| Xbox Game Studios Japan | Developer | |
| Xbox Games Studio | Publisher | |
| Xcrypt | Developer | |
| XeaKK | Developer | |
| Xeen | Developer | |
| Xeethrax | Developer | |
| Xelart game studio | Developer | |
| Xelostar | Developer | |
| Xen | Developer | |
| Xen Games | Developer | |
| Xenation | Developer | |
| Xendex | Developer | |
| Xeneth | Developer | |
| Xenix Dev | Developer | |
| XenoHorizon | DeveloperPublisher | |
| XenoRocket | Developer | |
| Xenomoo | Developer | |
| Xenon | Developer | |
| Xenon Interactive | Developer | |
| Xenon Neko | Developer | |
| XenonGhost | Developer | |
| Xenoneo | Developer | |
| XenosNS | Developer | |
| Xenoxygene | Developer | |
| Xenvex | Developer | |
| Xeonadow | Developer | |
| Xephrys | Developer | |
| XerStudios | Developer | |
| Xerise | Developer | |
| XeroKimo | Developer | |
| Xerquay | Developer | |
| Xerra | Developer | |
| Xerxes | Developer | |
| Xevinaly | Developer | |
| Xexus | Developer | |
| XeyCreatorsClub | Developer | |
| Xfinge | Developer | |
| XformGames | Developer | |
| Xgor | Developer | |
| Xhems | Developer | |
| Xhin | Developer | |
| XiNFiNiTY Games | Developer | |
| Xibalba | Developer | |
| Xicat Interactive | Publisher | |
| Xicat Interactive, Inc. | Publisher | |
| Xicat InteractiveEU | Publisher | |
| Xicat InteractiveNA | Publisher | |
| Xicat InteractivePAL | Publisher | |
| Xider Games | Publisher | |
| Xientra | Developer | |
| Xieyubing123 | Developer | |
| XiferGames | Developer | |
| Xilam | DeveloperPublisher | |
| Xillidonno | Developer | |
| XimioniLabs | Developer | |
| Ximo | Developer | |
| Ximpa | Developer | |
| Ximsol182 | Developer | |
| Xiness | DeveloperPublisher | |
| Xing | DeveloperPublisher | |
| Xing Entertainment | DeveloperPublisher | |
| Xing Inc. | Developer | |
| Xintetsu | Developer | |
| Xinyu Miao | Developer | |
| Xionviel | Developer | |
| Xiperius | Developer | |
| Xiris | Developer | |
| Xitilon | DeveloperPublisher | |
| Xixo Game Studio | DeveloperPublisher | |
| Xkeeper | Developer | |
| Xochi Interactive | Developer | |
| Xocolatl Games | Developer | |
| Xona Games | DeveloperPublisher | |
| Xondaro | Developer | |
| Xonha | Developer | |
| Xortrapa Soft | Publisher | |
| Xortrapa Soft (Julian Alarcon, Alberto Blanco, Joaquib, Abdul, Alex Gutierrez) | Developer | |
| XpAlliance | Developer | |
| Xpec | Developer | |
| Xpec Entertainment | Developer | |
| Xpiral | Developer | |
| Xplosiv | DeveloperPublisher | |
| XplosivEU | Publisher | |
| XplosivPAL | Publisher | |
| XrespectadripX | Developer | |
| XryEcho | Developer | |
| Xsco Games | Developer | |
| Xseed Games | DeveloperPublisher | |
| Xseed GamesNA | Publisher | |
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| Xtalsoft | DeveloperPublisher | |
| Xtreme Games | Developer | |
| Xtreme Games LLC | Publisher | |
| Xtreme Prime | Developer | |
| XtremeZero | Developer | |
| XtuK | Developer | |
| Xubiod | Developer | |
| Xujiang | Developer | |
| Xurxe Toivo García | Developer | |
| Xurzerth | Developer | |
| Xuse | DeveloperPublisher | |
| Xvyce | Developer | |
| XxDragon_FirexX | Developer | |
| XxMarceloxX | Developer | |
| Xychara | Developer | |
| Xysspon | Developer | |
| Xyterix | Developer | |
| Y Press Games | Developer | |
| Y'sK | Developer | |
| Y. Takahara | Developer | |
| Y.Srinivas Reddy | Developer | |
| Y2K Entertainment | Developer | |
| YARIO | Developer | |
| YBM SisaKO | Publisher | |
| YCJY | Developer | |
| YCJY Games | DeveloperPublisher | |
| YEET12331 | Developer | |
| YELLOW ATTIC | Developer | |
| YFC Games | DeveloperPublisher | |
| YFC games | Publisher | |
| YGGDRASIL STUDIO | Developer | |
| YHY_games | Developer | |
| YI DAI | Developer | |
| YMCAT | Developer | |
| YNK Interactive | Publisher | |
| YNK Korea | Developer | |
| YOUHAVEBETRAYEDME | Developer | |
| YT_GamingZoom | Developer | |
| YUITI | Developer | |
| YY-Games | Developer | |
| YYZ | Developer | |
| YZ248 Games | Developer | |
| Ya Boi Bonzi | Developer | |
| Ya2 | Developer | |
| YaBoiiiiiii | Developer | |
| YaHUB | Developer | |
| YaYaGames | Developer | |
| Yablio | Developer | |
| Yacht Club Games | DeveloperPublisher | |
| Yadir2447 | Developer | |
| Yadoob | Developer | |
| Yadr | Developer | |
| Yager | Developer | |
| Yager Development | Developer | |
| Yager Entertainment | Developer | |