| Arcadim | Developer | |
| Arcadonauts | Developer | |
| Arcan Studios | Developer | |
| Arcana Software | Publisher | |
| Arcana.Ai | Developer | |
| Arcanacra | Developer | |
| Arcane Four Studios | DeveloperPublisher | |
| Arcane Jello | Developer | |
| Arcane Kids | DeveloperPublisher | |
| Arcane Pixel Games | DeveloperPublisher | |
| ArcaneAria | Developer | |
| ArcaneRoboBrain | Developer | |
| Arcangelo Bonaparte | Developer | |
| Arcanity | DeveloperPublisher | |
| Arcanum Computing | DeveloperPublisher | |
| Arcanum Software Developments (Casey Bee Games, Rory C. Green, J. Dave Rogers) | Developer | |
| Arcextron | Developer | |
| Arch Rivals | Developer | |
| ArchBang | Developer | |
| ArchShiranui | Developer | |
| ArchVile games | Developer | |
| Archaic Bit | Developer | |
| Archdaimon | Developer | |
| Arche-san | Developer | |
| Archeia | Developer | |
| Archendrus | Developer | |
| Archer MacLean | Developer | |
| Archer McLean | Developer | |
| Archetype Interactive | Developer | |
| Archie_Golum | Developer | |
| Archimagus | Developer | |
| Archipelago | Developer | |
| Architect Enterprises | Developer | |
| Archon Interactive | Developer | |
| Archpray | Developer | |
| Archymede | Developer | |
| Arclight Creations | Developer | |
| Arco Iris | Developer | |
| Arctic Allosaurus | Developer | |
| Arctic Fox Games | Developer | |
| Arctic Studio | Developer | |
| ArcticCage | Developer | |
| Arcto Games | Developer | |
| Arcus | Developer | |
| Arcy | Developer | |
| Arda Gürcan | Developer | |
| ArdaGk | Developer | |
| Ardeimon | Developer | |
| Arden | Developer | |
| ArdenceVice | Developer | |