| J-TROGA STUDIOS | Developer | |
| J-Wing | DeveloperPublisher | |
| J-Wing JP | Publisher | |
| J-mo | Developer | |
| J. C. Holder (thirdtruck) | Developer | |
| J. Dave Rogers | Developer | |
| J. Douglas Patterson | Developer | |
| J. Francisco Martín Lisaso | Developer | |
| J. Gillis | Developer | |
| J. Javier Rueda | Developer | |
| J. Kyle Pittman | Developer | |
| J. Mather | Developer | |
| J. Preston | Developer | |
| J. Shramko | Publisher | |
| J. Stephen Shattuck, Jr. | Developer | |
| J.B. Kinard | Developer | |
| J.B.G.V. | Developer | |
| J.C. Wilson | Developer | |
| J.Carlos lópez (Sigmurg 90) | Developer | |
| J.J. Morgan | Developer | |
| J.M. Rivas | Developer | |
| J.Mad | Developer | |
| J.Nitchals | Developer | |
| J.Ortiz | Developer | |
| J.P.D.E Studios | Developer | |
| J.P.M. | Developer | |
| J0M0 | Developer | |
| J2415 Studio | Developer | |
| J250 | Developer | |
| J4F Studio | Developer | |
| J4RV | Developer | |
| J8chi | Developer | |
| JAC3D | Developer | |
| JACKMCPHERSONGAMES | Developer | |
| JACSKAVENGER | Developer | |
| JAD | Developer | |
| JADE | Developer | |
| JAGAD | Developer | |
| JAM | DeveloperPublisher | |
| JAM Productions | Developer | |
| JAM Software | Developer | |
| JAM software | Developer | |
| JAMIE ROWAN | Developer | |
| JARS-ar | Developer | |
| JASON3D | Developer | |
| JAST | DeveloperPublisher | |
| JAST Co. | DeveloperPublisher | |
| JAST USA | Publisher | |
| JAlexCarney | Developer | |
| JB Guzzler | Developer | |
| JBRobinson | Developer | |
| JBT21 | Developer | |
| JBasten | Developer | |
| JBazte | Developer | |
| JBo | Developer | |
| JBros | Developer | |
| JC Bailey | Developer | |
| JC Research Inc. | Publisher | |
| JCCO2468 | Developer | |
| JCJS games | Developer | |
| JCO | Developer | |
| JCSM Software | Publisher | |
| JContents | DeveloperPublisher | |
| JD | Developer | |
| JD Scott | Developer | |
| JDE | Developer | |
| JDERingtail | Developer | |
| JDK-LTA | Developer | |
| JDM23 | Developer | |
| JDRGames | Developer | |
| JDS | DeveloperPublisher | |
| JDWasabi | Developer | |
| JE Games | Developer | |
| JEHDStudios | Developer | |
| JEIA.CORP | Developer | |
| JEJ | Developer | |
| JEK Software | DeveloperPublisher | |
| JENNY_ | Developer | |
| JESGRAD07 | Developer | |
| JFerreira | Developer | |
| JH Games | Developer | |
| JH Specialty | Publisher | |
| JH12 | Developer | |
| JHD | Developer | |
| JHOF#64 | Developer | |
| JHauge | Developer | |
| JHawk Studios | Developer | |
| JJ | Developer | |
| JJ Game Studios | Developer | |
| JJ Gameware | Developer | |
| JJ Montes | Developer | |
| JJDizzle | Developer | |
| JJH47E | Developer | |
| JJJohnson | Developer | |
| JJamesWWang | Developer | |
| JJindori | Developer | |
| JK5000 | Developer | |
| JKClayton | Developer | |
| JKUO | Developer | |
| JLHM.XR | Developer | |
| 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 | |