- Ubisoft Barcelona (Rainbow Six Siege, Beyond Good & Evil 2, Avatar, Star Wars Outlaws, previously Assassin's Creed and many other ones)
- Mercury Steam (previously Metroid Dread, Castlevania Lords of Shadow series etc)
- IO Interactive Barcelona (Hitman 3, James Bond, Project Fantasy)
- Larian Barcelona (Baldurs Gate III)
IconEra
Yurinka
Yurinka
- Hexworks / CI Games (Lords of the Fallen)
- Paradox Tinto (Europa Universalis IV)
- Gameloft Barcelona (Disney Speedstorm, Asphalt series...)
- Saber Interactive Spain (previously Evil Dead, WWE 2K Battlegrounds, NBA 2K Playgrounds series...)
- Tequila Works (Song of Nunu: A League of Legends Story, previously Rime, Gylt...)
Yurinka
- Mediatonic Madrid (Fall Guys)
- Game Kitchen (Blasphemous, Blasphemous 2)
- Nomada Studio (Gris, Neva)
- Deconstructeam (Red Strings Club, The Cosmic Wheel Sisterhood...)
- Brainwash Gang (Laika, Friends vs Friends, Grotto, Nongunz...)
- Herobeat (Endling)
Yurinka
- Elite 3D (important outsourcing studio recently acquired by 2K, worked on many top IPs such as CoD, Diablo, Star Wars, PUBG, Crash, Monster Hunter, The Division, Hitman...)
- 2K Madrid (QA only, worked in NBA 2K22, Tiny Tina, WWE 2K22, Midnight Suns, Borderlands 3...)
Yurinka
- Blitworks (Spelunky 2, porting for many indie gems such as Braid, Streets of Rage 4, Spelunky, Fight'n Rage, Kerbal Space Program, Super Meat Boy, Fez, Bastion...)
Yurinka
I can't provide insider info and won't break NDAs, I just wanted to let you know that there are many console gamedev studios in Spain, some of them -or their staff- with a long history of publishing games on Nintendo platforms. 
Angie
You made far more research than I did lol
Only studio that I thought of was Mercury Steam lol
Only studio that I thought of was Mercury Steam lol