Xbox Game Studios:
1 | 343 Industries | USA | founded in 2007 | Halo franchise, Slipspace engine | a few teams at least: Infinite team, MCC team, strategy games team (I don't know if it still existing, because Dan Ayoub (head of) leaved the studio in 2017), Showtime's tv series team, franchise team (like Fireteam Raven arcade or Discovery Outpost event).
2 | Age of Empires studio (official name hasn't cleared legal yet) | USA | founded in 2019.
3 | The Coalition | Canada | founded in 2010 as Zipline Studios (Relic Rescue), rebranded in 2011 as Microsoft Game Studios Vancouver (Microsoft Flight), rebranding in 2012 as Black Tusk Studios to build already cancelled new huge franchise, Halo and Gears scale (Project Shangheist?), rebranded in 2015 to the current name | Gears franchise.
4 | Compulsion Games | Canada | founded in 2009, acquired in 2018 | Contrast, We Happy Few.
5 | Double Fine Productions | USA | founded in 2000, acquired in 2019 | for example Psychonauts, Brütal Legend, Broken Age, Grim Fandango Remastered, Rad.
6 | The Initiative | USA | founded in 2018.
7 | inXile | USA | founded in 2002, acquired in 2018 | Torment: Tides of Numenera, The Bard's Tale IV, Wasteland 3, unannounced project | two teams: #1 main (Newport Beach, CA), #2 additional (New Orleans, LA).
8 | Mojang (Minecraft) | Sweden | founded in 2009, acquired in 2014 | Minecraft, Minecraft Earth, Minecraft Dungeons | at least two teams: #1 in Stockholm, Sweden and #2 in Redmond, USA.
9 | Ninja Theory | United Kingdom | founded in 2000 as Just Add Monster, rebranded in 2004 as Ninja Theory, acquired in 2018 | Kung Fu Chaos, Heavenly Sword, Enslaved: Odyssey to the West, DmC: Devil May Cry, Hellblade: Senua's Sacrifice, Bleeding Edge | a few teams they've started work on a number of new games at the studio and in the near future they'll be sharing details on all of these projects.
10 | Obsidian | USA | founded in 2003, acquired in 2018 | STAR WARS™ Knights of the Old Republic™ II – The Sith Lords™, Fallout: New Vegas, South Park™: The Stick of Truth™, Pillars of Eternity, Tyranny, The Outer Worlds; also worked with Microsoft on Stormlands as a launch title for Xbox One (canceled in 2012) | at least 4 teams: #1 the biggest finishing The Outer Worlds, #2 smaller finishing Pillars of Eternity II, #3 and #4 new small teams that are starting things up.
11 | Playground Games | United Kingdom | founded in 2010, acquired in 2018 | Forza Horizon, unannounced open world action RPG to be announced "later" | two teams in Leamington Spa: #1 in Rossmore House (Horizon team), #2 in St. Albans House (RPG team).
12 | Rare | United Kingdom | founded in 1985 (!), rebranded in 1994 as Rareware, acquired in 2002, backed in 2003 to Rare | Banjo-Kazooie, Perfect Dark, Conker: Live & Reloaded, Kameo: Elements of Power, Viva Piñata, Kinect Sports, Sea of Thieves, overseeing Battletoads (developed by Dlala Studios) | at least 3 teams: #1 for Sea of Thieves, #2 for unannounced new project, #3 for overseeing old IPs (like Killer Instinct, Battletoads).
13 | Turn 10 Studios | USA | founded in 2001 | Forza Motorsport, helping with Forza Horizon, ForzaTech engine.
14 | Undead Labs | USA | founded in 2009, acquired in 2018 | State of Decay.
+ | Global Publishing division | USA | founded in… I don't know | CrossfireX (Smilegate), Ori and the Will of the Wisps (Moon Studios), Crackdown 3 (Sumo Digital / Red Kite Games / Elbow Rocket (aka Ruffian Games) / Certain Affinity), State of Decay 2 (released before being acquired), Phantom Dust (Code Mystics), Super Lucky's Tale (Playful Studios), ReCore (Comcept, Armature Studio), Quantum Break (Remedy Entertainment), Screamride (Frontier Developments), Ori and the Blind Forest (Moon Studios), Sunset Overdrive (Insomniac Games), Ryse: Son of Rome (Crytek), Dead Rising 3 (Capcom).
Sony Interactive Entertainment Worldwide Studios:
1 | Bend Studio | United States | founded in 1993, acquired in 2000 | Syphon Filter, UNCHARTED™: Golden Abyss, DAYS GONE |
2 | San Mateo Studio | United States | founded in 1998 | overseeing the development of first party games by external developers, like Marvel's Spider-Man or Farpoint.
3 | Guerilla Games | the Netherlands | founded in 2000, acquired in 2005 | Killzone series, Horizon Zero Dawn™, Decima engine.
4 | Japan Studio | Japan | founded in 1993 | ICO™ (w/ Team Ico), Shadow of the Colossus™ (w/ Bluepoint Games), Bloodborne™ (w/ FromSoftware), Everybody's Golf™ (w/ Clap Hanz), Gravity Rush™, KNACK™, LocoRoco™, Ape Escape™ | two additional divisions: Project Siren (Gravity Rush™), ASOBI! Team (ASTRO BOT Rescue Mission).
5 | London Studio | United Kingdom | founded in 1993 | now focused on VR games: Blood & Truth, previously SingStar or EyeToy franchises.
6 | Media Molecule | United Kingdom | founded in 2006, acquired in 2010 | LittleBigPlanet series, Tearaway™, Dreams.
7 | Naughty Dog | United States | founded in 1984 as JAM Software, rebranding in 1989 as Naughty Dog, acquired in 2001 | Crash Bandicoot, Jak and Daxter, UNCHARTED™, The Last of Us.
8 | Manchester Studio | United Kingdom | founded in 2015 | focused on VR games.
9 | PixelOpus | United States | founded in 2014 | Entwined, Concrete Genie.
10 | Polyphony Digital | Japan | founded in 1992 | Motor Toon Grand Prix, Gran Turismo | 5 teams around the world: Tokyo and Fukuoka (Japan), Amsterdam (the Netherlands), Los Angeles, CA (United States).
11 | San Diego Studio | United States | founded in 2001 | focused mainly on MLB The Show series, shipped also eg. StarBlood Arena™ (w/ WhiteMoon Dreams), Drawn to Death (w/ The Bartlet Jones Supernatural Detective Agency), Kill Strain.
12 | Santa Monica Studio | United States | founded in 1999 | focused mainly on God of War series, shipped also eg. Everybody's Gone to the Rapture (w/ The Chinese Room), The Order: 1886™ (w/ Ready at Dawn), PlayStation® All-Stars Battle Royale (w/ SuperBot Entertainment), The Unfinished Swan (w/ Giant Sparrow).
13 | Sucker Punch Productions | United States | founded in 1997, acquired in 2011 | Sly Cooper series, inFAMOUS series, Ghost of Tsushima.
+ | Sony XDev (External Development) Studio Europe | founded in… I don't know | collaborates with independent development studios across Europe (similar to XGS Publishing); Detroit: Become Human, BEYOND: Two Souls, Heavy Rain (Quantic Dream), The Inpatient, Hidden Agenda, Until Dawn (Supermassive Games), WiLD (Wild Sheep Studio), Matterfall, Alienation, RESOGUN (Housemarque), LittleBigPlanet™ 3 (Sumo Digital).