| ESTUDIO | ES EMPRESA | FUNDADO | LOCALIDAD | ACTIVIDAD |
|---|---|---|---|---|
| Mad Djinn Games | 2017 | Granada (Granada) | ||
| Mad Gear Games | 2015 | Cádiz (Cádiz) | ||
| Mad Triangles | 2016 | Madrid (Madrid) | ||
| Madruga Works | 2015 | Teo (A Coruña) | ||
| Magic Frame Studios | 2012 | San Fulgencio (Alicante) | ||
| Main Loop | 2017 | Bilbao (Bizkaia) | ||
| Majorariatto | 2013 | Mallorca (Islas Baleares) | ||
| Mandarina Games | 2014 | Terrassa (Barcelona) | ||
| Mango Protocol | 2013 | Barcelona (Barcelona) | ||
| Mansion Games | 2014 | Palma de Mallorca (Islas Baleares) | ||
| Markanime Studios | 2009 | Cartagena (Murcia) | ||
| Maska Games | 2015 | Barcelona (Barcelona) | ||
| Massive Fun 3D | 2014 | Barcelona (Barcelona) | ||
| Materia Works | 2013 | Madrid (Madrid) | ||
| Matnogames | 2016 | Murcia (Murcia) | ||
| Mechanic Games | 2013 | (Madrid) | ||
| Mechanical Boss | 2014 | Zaragoza (Zaragoza) | ||
| Meiga Labs | 2014 | Ourense (Ourense) | ||
| Mel Walsinats | 2014 | () | ||
| Melbot | 2017 | Barcelona (Barcelona) | ||
| Memetic Studios | 2019 | Madrid (Madrid) | ||
| MercurySteam | 2002 | San Sebastián de los Reyes (Madrid) | ||
| Meteorbyte Studios | 2017 | Oviedo (Asturias) | ||
| Mighty Polygon | 2016 | Valencia (Valencia) | ||
| Mighty Toast Studio | 2014 | Alicante (Alicante) | ||
| Milkstone Studios | 2008 | Oviedo (Asturias) | ||
| Mizu Games | 2015 | (Asturias) | ||
| Moad Studio | 2016 | Málaga (Málaga) | ||
| Modelsheep Studio | 2013 | Málaga (Málaga) | ||
| MoitaPechá Studio | 2015 | (A Coruña) | ||
| Mojon Twins | 2005 | () | ||
| Molegato | 2013 | Madrid (Madrid) | ||
| Monis Games | 2017 | Sevilla (Sevilla) | ||
| Monkey-Toons | 2009 | Madrid (Madrid) | ||
| Moon Factory Studios | 2015 | Madrid (Madrid) | ||
| Moonbite Games | 2011 | Barcelona (Barcelona) | ||
| Moonlight Games | 2019 | Jaén (Jaén) | ||
| Muquo Games | 2017 | Sevilla (Sevilla) |