| Ablaze games | Developer | |
| Able | Publisher | |
| Abner Santos | Developer | |
| Abnormalia | Developer | |
| Abogado Powers | DeveloperPublisher | |
| Abox | Developer | |
| Abracadata | Publisher | |
| Abraham | Developer | |
| Abrakam | Developer | |
| Abrakam Entertainment | Developer | |
| AbramFrost | Developer | |
| Abrexas | Developer | |
| Abrovinsch | Developer | |
| AbsoDev | Publisher | |
| AbsolLover666 | Developer | |
| Absolute Entertainment | DeveloperPublisher | |
| Absolute Entertainment NA | Publisher | |
| Absolute Magic | Developer | |
| Absolute Studios | Developer | |
| AbsoluteZero LLC | Developer | |
| Absolutist | Developer | |
| Abstract Concepts | DeveloperPublisher | |
| Abstract Concepts (Anna Popkess, Fergus McNeill) | Developer | |
| Abstract Digital | Developer | |
| Abstract Red Studio | Developer | |
| AbstractArt | Developer | |
| AbstractXan | Developer | |
| Abstraction Games | DeveloperPublisher | |
| AbsurdWaffle | Developer | |
| Absyarzilla | Developer | |
| AbsydeAuberon | Developer | |
| Abu | Developer | |
| Abvadabra | Developer | |
| Abylight | DeveloperPublisher | |
| Abylight Studios | DeveloperPublisher | |
| Abyss Team | Developer | |
| Abyssal | Developer | |
| Abyssal Arts | Developer | |
| Abyssal Instinct | Developer | |
| Abyssal Uncreations | Developer | |
| AbyssalTeam | Developer | |
| Abz101 | Developer | |
| AcHeHex | Developer | |
| Acade | Developer | |
| AcademySoft | DeveloperPublisher | |
| Acadev Industries | Developer | |
| AcceleRaptor | Developer | |
| Accelerate Games | Publisher | |
| Access | Developer | |
| Access Co. | Developer | |
| Access Games | DeveloperPublisher | |
| Access GamesJP | Publisher | |
| Access Software | DeveloperPublisher | |
| AccessCreative Manchester | Developer | |
| Accidental Queens | Developer | |
| Accidental Software | Developer | |
| Accidently Awesome Studios | Developer | |
| AccipiterStudios | Developer | |
| Acclaim | DeveloperPublisher | |
| Acclaim (US/EU) | Publisher | |
| Acclaim Cheltenham | Developer | |
| Acclaim Entertainment | DeveloperPublisher | |
| Acclaim Entertainment (NA) | Publisher | |
| Acclaim Entertainment (US) | Publisher | |
| Acclaim Entertainment (US/EU) | Publisher | |
| Acclaim Entertainment EU | Publisher | |
| Acclaim Entertainment, Inc. | Publisher | |
| Acclaim EntertainmentEU | Publisher | |
| Acclaim EntertainmentEU,NA | Publisher | |
| Acclaim EntertainmentJP | Publisher | |
| Acclaim EntertainmentNA | Publisher | |
| Acclaim EntertainmentNA/PAL | Publisher | |
| Acclaim EntertainmentPAL | Publisher | |
| Acclaim EntertainmentPAL/NA | Publisher | |
| Acclaim EntertainmentUS | Publisher | |
| Acclaim JP | Publisher | |
| Acclaim Japan | Publisher | |
| Acclaim Japan JP | Publisher | |
| Acclaim JapanJP | Publisher | |
| Acclaim Max Sports | Publisher | |
| Acclaim NA | Publisher | |
| Acclaim NA/EU | Publisher | |
| Acclaim Sports | Publisher | |
| Acclaim Studios Austin | Developer | |
| Acclaim Studios Cheltenham | Developer | |
| Acclaim Studios Croydon | Developer | |
| Acclaim Studios London | Developer | |
| Acclaim Studios Manchester | Developer | |
| Acclaim Studios Salt Lake City | Developer | |
| Acclaim Studios Teesside | Developer | |
| AcclaimEU | Publisher | |
| AcclaimPAL,NA | Publisher | |
| AcclaimUS | Publisher | |
| Accolade | DeveloperPublisher | |
| Accolade (Nick Wilson) | Developer | |
| Accolade (US) | Publisher | |
| Accolade (company) | DeveloperPublisher | |
| Accolade Inc. | Publisher | |
| Accolade NA | Publisher | |
| Accolade, Inc. | DeveloperPublisher | |
| AccoladeNA | Publisher | |
| AccoladePAL | Publisher | |
| According to Prophecy | Developer | |
| Accursed Toys | Developer | |
| Ace Maddox | DeveloperPublisher | |
| Ace Savaid | Developer | |
| Ace Software (Alan Cresswell) | Developer | |
| Ace Software (Alan P. Cresswell) | Developer | |
| Ace Team | Developer | |
| Ace of Wands | Developer | |
| AceMark | Developer | |
| AceOfAces | Developer | |
| Acemoisan | Developer | |
| Acer | Publisher | |
| Aces Games | Developer | |
| Achie | Developer | |
| Achromateam | Developer | |
| Acid | Developer | |
| Acid Nerve | Developer | |
| Acid Plan | DeveloperPublisher | |
| Acid Software | DeveloperPublisher | |
| Acid Wizard Studio | Developer | |
| Acid x Kitty | Developer | |
| AcidSpaceshipp | Developer | |
| AcidicDuck | Developer | |
| AcidosisProductions | Developer | |
| Ackk Studios | DeveloperPublisher | |
| Aclips | Developer | |
| Acme Animation | DeveloperPublisher | |
| Acme Interactive | Developer | |
| Acme Interactive Productions | Developer | |
| Acme Nerd Games | Developer | |
| Aconitum Games | Developer | |
| Acony | Developer | |
| Acorn Software | Publisher | |
| Acquire | DeveloperPublisher | |
| Acquire Corp | Publisher | |
| AcroPR | Developer | |
| Acropolise | Developer | |
| Acrosicious | Developer | |
| Acroviu | Developer | |
| Act Japan | Developer | |
| Actainment | Developer | |
| Actawesome | Developer | |
| Acti-Art | DeveloperPublisher | |
| Action 53 | Developer | |
| Action Button | Developer | |
| Action Forms | Developer | |
| Action Graphics | Developer | |
| Action Software | Publisher | |