| ESTUDIO | ES EMPRESA | FUNDADO | LOCALIDAD | ACTIVIDAD |
|---|---|---|---|---|
| Octavilla Games | 2018 | Sevilla (Sevilla) | ||
| Odders Lab | 2018 | Sevilla (Sevilla) | ||
| Ofihombre | 2015 | Gata de Gorgos (Alicante) | ||
| Omnimonkey | 2013 | Madrid (Madrid) | ||
| Omnium Lab Studios | 2013 | Algeciras (Cádiz) | ||
| Onbox Games | 2017 | Madrid (Madrid) | ||
| OnePixelSoft | 2013 | Sevilla (Sevilla) | ||
| Oniric Factor | 2011 | Sevilla (Sevilla) | ||
| OPQA Studios | 2010 | Madrid (Madrid) | ||
| Orenji Games | 2017 | Valencia (Valencia) | ||
| Out of the Blue Games | 2018 | Madrid (Madrid) | ||
| OveR Software | 2015 | Cartagena (Murcia) | ||
| Over the Top Games | 2008 | Madrid (Madrid) | ||
| OverPowered Team | 2014 | Madrid (Madrid) | ||
| OXiAB Game Studio | 2014 | (Barcelona) |