| Groups (developers) | Abbr. | Country | City | Rating | |
|---|---|---|---|---|---|
| Retronics | 0.00 ±0.0 | ||||
| RetroZock | 0.00 ±0.0 | ||||
| Rhea Creative Marketing, Inc. | 0.00 ±0.0 | ||||
| Rheinland-Pfälzische Atari Maniacs | Germany | 0.00 ±0.0 | |||
| Rhiannon Software | 0.00 ±0.0 | ||||
| Richwood Software | 0.00 ±0.0 | ||||
| Ricolasoft | 0.00 ±0.0 | ||||
| Ringblack Software | 0.00 ±0.0 | ||||
| Ripsoft | United Kingdom | Salford | 0.00 ±0.0 | ||
| Rising Star Software | 0.00 ±0.0 | ||||
| RJF Software Company | 0.00 ±0.0 | ||||
| RLM Micro Systems | United States | 0.00 ±0.0 | |||
| RMP Software | 0.00 ±0.0 | ||||
| RMT (Examples) | 0.00 ±0.0 | ||||
| Robespix Software | 0.00 ±0.0 | ||||
| Robo Software Ltd. | 0.00 ±0.0 | ||||
| Rohar | 0.00 ±0.0 | ||||
| Roklan | 0.00 ±0.0 | ||||
| ROM Magazine | 0.00 ±0.0 | ||||
| ROM Software | 0.00 ±0.0 |
