| JP: IntraGames | Publisher | |
| JP: Intragames | Publisher | |
| JP: Joyful Table | Publisher | |
| JP: Just for Games | Publisher | |
| JP: Justdan | Publisher | |
| JP: Justdan International | Publisher | |
| JP: Kadokawa Games | Publisher | |
| JP: Kadokawa Shoten | Publisher | |
| JP: Kairosoft | Publisher | |
| JP: Kemco | Publisher | |
| JP: Koch Media | Publisher | |
| JP: Kogado Studio | Publisher | |
| JP: Konami | Publisher | |
| JP: Leoful | Publisher | |
| JP: Level-5 | Publisher | |
| JP: MTO | Publisher | |
| JP: Mages | Publisher | |
| JP: Marvelous | Publisher | |
| JP: Marvelous AQL | Publisher | |
| JP: Marvelous Entertainment | Publisher | |
| JP: Mebius | Publisher | |
| JP: Mechanic Arms | Publisher | |
| JP: Microsoft | Publisher | |
| JP: Milestone s.r.l | Publisher | |
| JP: NA Publishing | Publisher | |
| JP: Namco | Publisher | |
| JP: Natsume | Publisher | |
| JP: Nintendo | Publisher | |
| JP: Nippon Columbia | Publisher | |
| JP: Nippon Ichi Software | Publisher | |
| JP: Office Create | Publisher | |
| JP: Oizumi Amuseo | Publisher | |
| JP: Oizumi Amuzio | Publisher | |
| JP: Pikii | Publisher | |
| JP: Playism | Publisher | |
| JP: Poisoft | Publisher | |
| JP: Rainy Frog | Publisher | |
| JP: Ratalaika Games | Publisher | |
| JP: RideOn Japan | Publisher | |
| JP: Rocket Company | DeveloperPublisher | |
| JP: S2 Entertainment | Publisher | |
| JP: Santa Entertainment | Publisher | |
| JP: Sega | Publisher | |
| JP: Shinyuden | Publisher | |
| JP: Ship | Publisher | |
| JP: Silver Star | Publisher | |
| JP: Sonic Powered | Publisher | |
| JP: Sony Interactive Entertainment | Publisher | |
| JP: Spicysoft | Publisher | |
| JP: Spike | Publisher | |
| JP: Spike Chunsoft | Publisher | |
| JP: Sprite | Publisher | |
| JP: Square Enix | Publisher | |
| JP: Starfish | Publisher | |
| JP: Starfish SD | Publisher | |
| JP: Starsign | Publisher | |
| JP: Sting Entertainment | Publisher | |
| JP: Studio Nanafushi | Publisher | |
| JP: Success | Publisher | |
| JP: Sunsoft | Publisher | |
| JP: Taito | Publisher | |
| JP: Takara Tomy | Publisher | |
| JP: Take-Two Interactive | Publisher | |
| JP: Team17 | Publisher | |
| JP: Tecmo Koei | Publisher | |
| JP: Teyon | DeveloperPublisher | |
| JP: Teyon Japan | Developer | |
| JP: Ubisoft | Publisher | |
| JP: Unity Games | Publisher | |
| JP: Unties | Publisher | |
| JP: Whippoorwill | Publisher | |
| JP: Worker Bee | Publisher | |
| JP: WorkerBee | Publisher | |
| JP: Zodiac Interactive | Publisher | |
| JP: eXtend | Publisher | |
| JPBarroso | Developer | |
| JPC_DMG_AS | Developer | |
| JPLikesGames | Developer | |
| JPNA SNK | Publisher | |
| JPNA Tecmo | DeveloperPublisher | |
| JPSquare | Publisher | |
| JPTaito Corporation | Publisher | |
| JPW Smith | Developer | |
| JR 01 | Developer | |
| JR-TS | Developer | |
| JRC Interactive | Publisher | |
| JRCarroll | Developer | |
| JRPG Combat Systems | Developer | |
| JRaven | Developer | |
| JS Games | Developer | |
| JSDesign | Developer | |
| JSH | Developer | |
| JSMCAG | Developer | |
| JSSJ Software | Publisher | |
| JSelfe | Developer | |
| JStP | Developer | |
| JT HU ENTERTAINMENT | Developer | |
| JT JG Games | Developer | |
| JTAGamesInc | Developer | |
| JTR | Developer | |
| JTrocks55 | Developer | |
| JUAN3A | Developer | |
| JUEGOS RANCHEROS | Developer | |
| JUMP Game Studio | Developer | |
| JUMP OVER THE AGE | Developer | |
| JUNE STUDIO | Developer | |
| JUST US | Developer | |
| JUSTCAMH | Developer | |
| JUSTGM | Developer | |
| JV Games | Developer | |
| JV Games Inc. | Developer | |
| JVC | DeveloperPublisher | |
| JVC (EU) | Publisher | |
| JVC (NA/EU) | Publisher | |
| JVC Digital Studios | DeveloperPublisher | |
| JVC Digital StudiosPAL | Publisher | |
| JVC EU | Publisher | |
| JVC Musical Industries | Publisher | |
| JVC Musical Industries Europe | Publisher | |
| JVC Musical Industries NA/EU | Publisher | |
| JVC[14] | Publisher | |
| JVM Design | Developer | |
| JVlatt | Developer | |
| JW | Developer | |
| JWD Corp. | Developer | |
| JWR26 Games | Developer | |
| JaBub Games | Developer | |
| JaDonaGames | Developer | |
| JaGTeK Games | Developer | |
| JaTDev | Developer | |
| JaVen-Indie | Developer | |
| Jaafar2110 | Developer | |
| Jaakko Lyytinen | Developer | |
| Jaboeb | Developer | |
| Jabrils | Developer | |
| Jabudino | Developer | |
| JacaPlay | Developer | |
| Jacaranda Games | Developer | |
| Jacaranda Wiley LTD | Publisher | |
| Jace Doyle | Developer | |
| Jace Voracek | DeveloperPublisher | |
| JaceSilverwave | Developer | |
| Jacic | Developer | |
| Jack Anderson | Developer | |
| Jack Bandai | Developer | |
| Jack Bean Ltd. | DeveloperPublisher | |
| Jack Boylan | Developer | |
| Jack Brubaker | Developer | |
| Jack Gianduso | Developer | |
| Jack Goddard | Developer | |
| Jack Griffiths | Developer | |
| Jack Hart Games | Developer | |
| Jack Kaloger | Developer | |
| Jack Kutilek | Developer | |
| Jack LaLonde | Developer | |
| Jack Le Hamster | Developer | |
| Jack Leonard | Developer | |
| Jack Matthew | Developer | |
| Jack McDaid | Developer | |
| Jack Mitchell | Developer | |
| Jack Morgan | Developer | |
| Jack O'Neal | Developer | |
| Jack Of All Games | Publisher | |
| Jack Perkins | Developer | |
| Jack Pot | Developer | |
| Jack Squires | Developer | |
| Jack Vine | Developer | |
| Jack Wilkes | Developer | |
| Jack Yang | Developer | |
| Jack [Awesomeguy3434] | Developer | |
| Jack of All Games | DeveloperPublisher | |
| Jack of All GamesPAL | Publisher | |
| Jack2000 | Developer | |
| Jack7 Games | Developer | |
| JackBreen_HG | Developer | |
| JackDarx | Developer | |
| JackEatock | Developer | |
| JackGames | Developer | |
| JackLance | Developer | |
| JackOatley | Developer | |
| JackPrograms | Developer | |
| JackTrick | Developer | |
| JackUwU | Developer | |
| JackV76 | Developer | |
| Jackaloops | Developer | |
| Jackbox Games | DeveloperPublisher | |
| Jackhammer Games | Developer | |
| JackieLiu | Developer | |
| Jackkel Dragon | Developer | |
| JackobStudios | Developer | |
| Jackpot | Developer | |
| JacksInner | Publisher | |
| Jackson Allen | Developer | |
| JacksonP | Developer | |
| Jacktive Active Games | Developer | |
| Jacob | Developer | |
| Jacob Albano | Developer | |
| Jacob Bell | Developer | |
| Jacob Crews | Developer | |
| Jacob Grossman | Developer | |