| Ardentsquid | Developer | |
| Ardoos | Developer | |
| Ardos | Developer | |
| Arduc | DeveloperPublisher | |
| Arduino kid | Developer | |
| Area Effect | Developer | |
| Area Zero | DeveloperPublisher | |
| Area35 | Developer | |
| Aredhele | Developer | |
| Arefnue | Developer | |
| Arekku | Developer | |
| ArenDev | Developer | |
| Arena | Publisher | |
| Arena Entertainment | Publisher | |
| Arena EntertainmentNA | Publisher | |
| Arena EntertainmentNA/EU | Publisher | |
| Arena EntertainmentNA/PAL | Publisher | |
| Arena of Kings | Developer | |
| ArenaNet | Developer | |
| Arewel | Developer | |
| Arga Váron | Developer | |
| Argent | DeveloperPublisher | |
| Argent Games | Developer | |
| ArgentJP | Publisher | |
| Argo Games | Developer | |
| Argonaut | Developer | |
| Argonaut Games | DeveloperPublisher | |
| Argonaut Software | DeveloperPublisher | |
| Argonaut Software Ltd. | Developer | |
| ArgondevilGuiderods | Developer | |
| ArgotBertha | Developer | |
| Argus Press Software | Publisher | |
| Argus Press Software (Ste L. Cork) | Developer | |
| Arhi | Developer | |
| Ari_I | Developer | |
| Aria | DeveloperPublisher | |
| Aria Mohebi | Developer | |
| Ariadna Álvarez | Developer | |
| ArialWicklund | Developer | |
| Arian Behfar | Developer | |
| Ariane Gomes | Developer | |
| Arido | Developer | |
| ArieSne | Developer | |
| Ariel Endaraues | Developer | |
| Ariel Gimenez | Developer | |
| Ariel Martínez Jacobson | Developer | |
| Aries | Developer | |
| Arietta of Spirits | Developer | |
| ArifAsaf | Developer | |
| ArifZ | Developer | |
| 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 | |