| 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 | |