| ESTUDIO | ES EMPRESA | MIEMBROS | FUNDADO | LOCALIDAD | ACTIVIDAD |
|---|---|---|---|---|---|
| Obscure Tales | 2-5 | 2018 | Sevilla (Sevilla) | ||
| Octavilla Games | 2-5 | 2018 | Sevilla (Sevilla) | ||
| Odders Lab | 6-10 | 2018 | Sevilla (Sevilla) | ||
| Ofihombre | 1 | 2015 | Gata de Gorgos (Alicante) | ||
| Omnimonkey | 2013 | Madrid (Madrid) | |||
| Omnium Lab Studios | 6-10 | 2013 | Algeciras (Cádiz) | ||
| Oniric Factor | 2-5 | 2011 | Sevilla (Sevilla) | ||
| Open House Games | 2019 | Barcelona (Barcelona) | |||
| Otter Worlds Games | 2022 | Madrid (Madrid) | |||
| Out of the Blue Games | 11-25 | 2018 | Madrid (Madrid) | ||
| Outfit7 Barcelona | 26-50 | 2018 | Barcelona (Barcelona) | ||
| Outlander Games | 2021 | Madrid (Madrid) | |||
| OveR Software | 2-5 | 2015 | Cartagena (Murcia) | ||
| Over the Top Games | 6-10 | 2008 | Madrid (Madrid) | ||
| OverPowered Team | 2-5 | 2014 | Madrid (Madrid) | ||
| OXiAB Game Studio | 2-5 | 2014 | (Barcelona) |