| ACES Studios | Developer | |
| ACGodliman | Developer | |
| ACID.Games | Developer | |
| ACIDATM | Developer | |
| ACMI.ScreenIt | Developer | |
| ACOT | Developer | |
| ACRO Studio | Developer | |
| ACTION MEDIAS JEUNES | Developer | |
| ACTIONSQUARE | DeveloperPublisher | |
| ACat | Developer | |
| ACooper | Developer | |
| ACsplash | Developer | |
| AD1Crazy | Developer | |
| ADE | Developer | |
| ADI Development | Developer | |
| ADIS1 | Developer | |
| ADITYA ⋈ SAH | Developer | |
| ADK | DeveloperPublisher | |
| ADM | DeveloperPublisher | |
| ADiggins | Developer | |
| ADvertainment Software | Developer | |
| AEC Software | Publisher | |
| AECRNIA | Developer | |
| AESO | Developer | |
| AETuts | Developer | |
| AEtharr | Developer | |
| AFTERLIFE | Developer | |
| AG Corp. | Developer | |
| AG Dev | Developer | |
| AGAR | Developer | |
| AGEOD | DeveloperPublisher | |
| AGGROCRAB | Developer | |
| AGGStudios | Developer | |
| AGGroAzteca | Developer | |
| AGI | Publisher | |
| AGL Studios | Developer | |
| AGPX | Developer | |
| AGZA13th | Developer | |
| AGamerAaron | Developer | |
| AGsilverAG | Developer | |
| AHAKuo | Developer | |
| AI | Developer | |
| AI Factory | DeveloperPublisher | |
| AIA | DeveloperPublisher | |
| AIA Games | Publisher | |
| AIA USA | Publisher | |
| AIC Spirits | Developer | |
| AIE Seattle | Developer | |
| AIL | DeveloperPublisher | |
| AIM | Developer | |
| AIOUS Production | Developer | |
| AJ | Developer | |
| AJ Ordaz | Developer | |
| AJ Project | Developer | |
| AJ08Coder | Developer | |
| AJB GAMES STUDIO | Developer | |
| AJJMCC | Developer | |
| AJOmega | Developer | |
| AJS Game Dev | Developer | |
| AK | Developer | |
| AK CommunicationsKO | Publisher | |
| AK Games | Publisher | |
| AKA Acclaim | Publisher | |
| AKAR | Developer | |
| AKARI | Developer | |
| AKI | DeveloperPublisher | |
| AKI Corp. | Developer | |
| AKI Corporation | Developer | |
| AKI Corporation USA | Developer | |
| AK_54 | Developer | |
| ALAKON | Developer | |
| ALAMURIT | Developer | |
| ALBERTITO44 | Developer | |
| ALBUS203 | Developer | |
| ALCHEMYGAMEWORKS | Developer | |
| ALFXogo | Developer | |
| ALGEBRU | Developer | |
| ALK (anything little known) | Developer | |
| ALL IN! GAMES | Publisher | |
| ALLIE CAT GAMES | Developer | |
| ALMI Games | Developer | |
| ALTAR Interactive | Developer | |
| ALU | Developer | |
| ALcot | Developer | |
| ALiNaX | Developer | |
| ALostRabbit | Developer | |
| AM EDucated VEGtable | Developer | |
| AM Factory | Publisher | |
| AM R&D Dept. #2 | Developer | |
| AM R&D Dept.#2 | Developer | |
| AM1 | Developer | |
| AM5 | Developer | |
| AM7 | Developer | |
| AMA Studios | Developer | |
| AMATERAS | Developer | |
| AMAXANG GAMES | Developer | |
| AMBU5H | Developer | |
| AMC Soft | Publisher | |
| AMET GAMES | Developer | |
| AMI | Publisher | |
| AMRN | Developer | |
| AMS | Developer | |
| AMStudio | Developer | |
| AMT Games | Developer | |
| AMT Savan | Publisher | |
| AMT Savan Corp. | Publisher | |
| AMX004_Qubeley | Developer | |
| AN-studios | Developer | |
| ANCO | Developer | |
| ANGROWA | Developer | |
| ANILGDEV | Developer | |
| ANIM•ACE | Developer | |
| ANOZOR | Publisher | |
| ANV | Hadrian Lin | Developer | |
| ANyden | Developer | |
| AOFG | Developer | |
| AObit | Developer | |
| APGamesR | Developer | |
| APPLAB | Developer | |
| APXStudios | Developer | |
| APh Technological Consulting | Developer | |
| APiotrW | Developer | |
| AQ Interactive | DeveloperPublisher | |
| AQ InteractiveJP | Publisher | |
| AQUANAUTS HOLIDAY | Developer | |
| AR Borno | Developer | |
| ARBEX | Developer | |
| ARBORETA GAMES | Developer | |
| ARC | Publisher | |
| ARC Entertainment | Developer | |
| ARC EntertainmentPAL | Publisher | |
| ARCADEdreams | Developer | |
| AREGO | Developer | |
| ARF Game Studio | Developer | |
| ARF Initiative | Developer | |
| ARGOnaut | Developer | |
| ARKAD Studio | Developer | |
| ARKLIGHT | Developer | |
| ARP Software (Tony R. Porter, Jon Harrison, Ben Daglish) | Developer | |
| ARQUOIA | Developer | |
| ARStudio | Developer | |
| ARTIFACTS | Developer | |
| ARUSH Entertainment | Publisher | |
| AS | Developer | |
| AS Team | Developer | |
| AS-Freegames | DeveloperPublisher | |
| ASA Studio | Developer | |
| ASAPL0 | Developer | |
| ASATERA | Developer | |
| ASC Games | DeveloperPublisher | |
| ASC Games NA | Publisher | |
| ASC GamesNA | Publisher | |
| ASCARON Entertainment | DeveloperPublisher | |
| ASCII | DeveloperPublisher | |
| ASCII Coproation | Publisher | |
| ASCII Corporation | DeveloperPublisher | |
| ASCII Corporation JP | Publisher | |
| ASCII CorporationJP | Publisher | |
| ASCII Entertainment | DeveloperPublisher | |
| ASCII Entertainment (JP) | Publisher | |
| ASCII EntertainmentJP | Publisher | |
| ASCII EntertainmentNA | Publisher | |
| ASCII Media Works | DeveloperPublisher | |
| ASCII Software | DeveloperPublisher | |
| ASCII Something Good | Publisher | |
| ASECC | Developer | |
| ASH2 | Developer | |
| ASHGAMES | Publisher | |
| ASK | DeveloperPublisher | |
| ASK Co Ltd. | Developer | |
| ASK Homework | Developer | |
| ASK Kodansha | DeveloperPublisher | |
| ASK Kodansha JP | Publisher | |
| ASK-Kodansha | Developer | |
| ASKGAMES | Developer | |
| ASKJP | Publisher | |
| ASKJP Midas Interactive EntertainmentEU | Publisher | |
| ASM game world | Developer | |
| ASMB Games | Developer | |
| ASNetworks | Publisher | |
| ASSAKER | Developer | |
| ASanzL | Developer | |
| ASaunders | Developer | |
| ASecondGuy | Developer | |
| AS酱 | Developer | |
| ATA_Games | Developer | |
| ATJ | Developer | |
| ATLAS | Developer | |
| ATMOS | Developer | |
| ATP Projects | Developer | |
| ATTACK MOUNTAIN | Developer | |
| ATU | Developer | |
| ATalbi | Developer | |
| ATangTuanZi | Developer | |
| AToTaT_Admin | Developer | |
| AU: 505 Games | Publisher | |
| AU: Nintendo Australia | Publisher | |
| AU: Popcorn Arcade | Publisher | |
| AU: Take-Two Interactive | Publisher | |
| AU: Tradewest | Publisher | |