| JLI | Developer | |
| JLKings | Developer | |
| JLMKart | Developer | |
| JLPM | Developer | |
| JLateralus | Developer | |
| JMAS | Developer | |
| JMD Arts | Developer | |
| JME Engineering | DeveloperPublisher | |
| JMIDEV | Developer | |
| JMJ Interactive | DeveloperPublisher | |
| JMRSN | Developer | |
| JMS | Developer | |
| JMS777 | Developer | |
| JMStark | Developer | |
| JManoclay | Developer | |
| JN Production | Developer | |
| JN Squared | Developer | |
| JNH | Developer | |
| JNI | Developer | |
| JNS Software | Publisher | |
| JO-əl | Developer | |
| JOAOMOTAGAMES | Developer | |
| JOEY | Developer | |
| JOLLY JUMPER STUDIOS | Developer | |
| JON MECH | Developer | |
| JORDI_B.2018 | Developer | |
| JORGE BIEDMA AZUAR | Publisher | |
| JOSEPH QUESTED | Developer | |
| JOSHUA ROBERTSON | Developer | |
| JOUST | Developer | |
| JOY | Developer | |
| JOrbits | Developer | |
| JP | Developer | |
| JP D3 | Publisher | |
| JP Enix Corporation | Publisher | |
| JP LeBreton | Developer | |
| JP Sony Music Entertainment | Publisher | |
| JP Success | Publisher | |
| JP Taito Corporation | Publisher | |
| JP Takara | Publisher | |
| JP Technos Japan | Publisher | |
| JP: 3goo | Publisher | |
| JP: 5pb. | Publisher | |
| JP: AQ Interactive | Publisher | |
| JP: ASNetworks | Publisher | |
| JP: Acquire | Publisher | |
| JP: Activision | Publisher | |
| JP: Agatsuma Entertainment | Publisher | |
| JP: Alfa System | Publisher | |
| JP: Arc System Works | Publisher | |
| JP: Atlus | Publisher | |
| JP: Bandai Namco Entertainment | Publisher | |
| JP: Bandai Namco Games | Publisher | |
| JP: Beep | Publisher | |
| JP: Bergsala Lightweight | Publisher | |
| JP: Beyond Interactive | Publisher | |
| JP: Bilibili | Publisher | |
| JP: Brave Wave Productions | Publisher | |
| JP: Chorus Worldwide | Publisher | |
| JP: Chunsoft | Publisher | |
| JP: Circle Entertainment | Publisher | |
| JP: City Connection | Publisher | |
| JP: Compile Heart | Publisher | |
| JP: Cooking Mama Limited | Publisher | |
| JP: Cosen | Publisher | |
| JP: Cross Fuction | Publisher | |
| JP: Cross Function | Publisher | |
| JP: CyberStep | Publisher | |
| JP: Cyberfront | Publisher | |
| JP: Cygames | Publisher | |
| JP: D3 Publisher | Publisher | |
| JP: DMM Games | Publisher | |
| JP: Dangen Entertainment | Publisher | |
| JP: Destructive Creations | Publisher | |
| JP: Digital Bards | Publisher | |
| JP: Dredger | Publisher | |
| JP: EastAsiaSoft | Publisher | |
| JP: Exnoa | Publisher | |
| JP: Experience | Publisher | |
| JP: Extreme Games | Publisher | |
| JP: Flyhigh Works | Publisher | |
| JP: FuRyu | Publisher | |
| JP: Fun Unit | Publisher | |
| JP: G-Mode | Publisher | |
| JP: GHI Media | Publisher | |
| JP: Game Source Entertainment | Publisher | |
| JP: Gearbox Publishing | Publisher | |
| JP: Granzella | Publisher | |
| JP: Greenlight Games | Publisher | |
| JP: H2 Interactive | Publisher | |
| JP: Hachinoyon | Publisher | |
| JP: Hamster Corporation | Publisher | |
| JP: Hook Games | Publisher | |
| JP: Hudson | Publisher | |
| JP: Hudson Soft | Publisher | |
| JP: HumaNature Studios | Publisher | |
| JP: Idea Factory | Publisher | |
| JP: Intergrow | Publisher | |
| JP: Inti Creates | Publisher | |
| JP: Intra Games | Publisher | |