| Arika | DeveloperPublisher | |
| ArikaJP | Publisher | |
| Arikado | Developer | |
| Arilbot | Developer | |
| Arin | Developer | |
| Ariolasoft | Publisher | |
| Arionlk | Developer | |
| Aristaeus890 | Developer | |
| Aristocrat Leisure | Developer | |
| Aristotle Software | Publisher | |
| AriusProductions | Developer | |
| Ariya | Developer | |
| Ariënne van Ee | Developer | |
| Arjan Brussee | Developer | |
| Arjun | Developer | |
| Ark Heiral | Developer | |
| Ark Multimedia Publishing | DeveloperPublisher | |
| Ark1ve | Developer | |
| Arkade | Developer | |
| Arkadium | Developer | |
| Arkagis | Developer | |
| Arkane Studios | Developer | |
| Arkania | Developer | |
| Arkann | Developer | |
| ArkarPhyo | Developer | |
| Arkbrik | Developer | |
| Arkedo Studio | Developer | |
| Arkham Products | DeveloperPublisher | |
| Arknoid | Developer | |
| Arknostik | Developer | |
| Arlasoft | Developer | |
| Arlay | Developer | |
| ArloFennekku | Developer | |
| Arlorean | Developer | |
| Arludus | Developer | |
| ArmadilloBros | Developer | |
| Armakono Games | Developer | |
| Armaldio | Developer | |
| ArmanDoesStuff | Developer | |
| Armand Preschutti | Developer | |
| Armanky | Developer | |
| Armanlone (Main) | Developer | |
| Armatelum Dev (J5 the Hyperforce) | Developer | |
| Armati Soft | Publisher | |
| Armature Studio | DeveloperPublisher | |
| Armed Gorilla | Developer | |
| Armel Gibson | Developer | |
| Armenia | Publisher | |
| Armin Unold | Developer | |
| Armo03 | Developer | |