Stole this list from
http://www.neogaf.com/forum/showpost.php?p=33988626&postcount=1621
It seems Sony have many studios at work. I think the reason for this is so they can support Vita and PS3 at the same time, it also helps to have extra studios when moving on to PS4, for example, Naughty Dogg has one studio making a PS3 game late in it's life, and most likely another studio developing a PS4 game.
3rd party studios that are developing/developed exclusive for Sony
Sanzaru Games - Sly Cooper: Thieves in Time
ThatGameCompany - Journey (PSN)
Giant Sparrow - The Unfinished Swan (PSN)
Developer TBA - Until Dawn (unannounced)
Ready At Dawn - Unannounced Title
Quantic Dream - Two unannounced Titles
Tarsier Studios - Exclusive 1st party agreement. Currently working on LittleBigPlanet Vita and other projects
Novarama Studios - Exclusive 1st party agreement. Reality Fighters and other titles.
Armature Studios (Ex Retro staff) - Helped with MGS HD Vita port, have another unannounced project
Superbot Entertainment - PlayStation Title Fight (unannounced)
Double Eleven - LittleBigPlanet Vita
Lightbox Interactive - Starhawk
The Workshop - Sorcery
Nihilistic - Resistance: Burning Skies
Q Games - PixelJunk 4 A.M, other Pixeljunk titles
Idol Minds - Ruin for Vita, Ratchet HD Collection
Fun Bits - Escape Plan
Mass Media Inc - Jak & Daxter HD Collection
HouseMarque - SuperStardust Delta
HoneySlug - Frobisher Says
Queasy Games - Sound Shapes
Plastic - Datura (Move game)
Clap Hanz - Hot Shots Golf Vita
Zindagi - MediEvil Moves/Sports Champions
Supermassive Games Tumble/Start The Party
Blue Point Studios - GoW HD Collection, Team ICO Collection
These are the 1st party IP's being worked on by 1st party studios:
Studio Cambridge - Killzone Vita
Naughty Dog Team 1 - The Last of Us
SCEJ Studio Japan - Gravity Daze/Rush
Team ICO - The Last Guardian
San Diego Studios - MLB: The Show, LittleBigPlanet Racers
Santa Monica Team 2 - God of War: Ascension
Then we have to consider their 1st party teams with unannounced projects (I have put some guesses down on what I think they are making):
Guerilla Games Team 1 - Killzone 4?
Guerilla Games Team 2 - New IP?
Naughty Dog Team 2 - Uncharted 4 for PS4?
Polyphony Digital GT Vita or GT PS4?
Evolution Studios - MotorStorm or New Racer for PS4?
Media Molecule - New IP for Vita?
Studio Liverpool - WipeOut PS3 DLC?
Santa Monica Team 1 - New IP for PS4?
Sucker Punch Productions - inFamous 3 or new IP for PS4?
Studio London - Move game?
SCE Bend - Uncharted Vita 2 or Syphon Filter Vita?
http://www.neogaf.com/forum/showpost.php?p=33988626&postcount=1621
It seems Sony have many studios at work. I think the reason for this is so they can support Vita and PS3 at the same time, it also helps to have extra studios when moving on to PS4, for example, Naughty Dogg has one studio making a PS3 game late in it's life, and most likely another studio developing a PS4 game.
3rd party studios that are developing/developed exclusive for Sony
Sanzaru Games - Sly Cooper: Thieves in Time
ThatGameCompany - Journey (PSN)
Giant Sparrow - The Unfinished Swan (PSN)
Developer TBA - Until Dawn (unannounced)
Ready At Dawn - Unannounced Title
Quantic Dream - Two unannounced Titles
Tarsier Studios - Exclusive 1st party agreement. Currently working on LittleBigPlanet Vita and other projects
Novarama Studios - Exclusive 1st party agreement. Reality Fighters and other titles.
Armature Studios (Ex Retro staff) - Helped with MGS HD Vita port, have another unannounced project
Superbot Entertainment - PlayStation Title Fight (unannounced)
Double Eleven - LittleBigPlanet Vita
Lightbox Interactive - Starhawk
The Workshop - Sorcery
Nihilistic - Resistance: Burning Skies
Q Games - PixelJunk 4 A.M, other Pixeljunk titles
Idol Minds - Ruin for Vita, Ratchet HD Collection
Fun Bits - Escape Plan
Mass Media Inc - Jak & Daxter HD Collection
HouseMarque - SuperStardust Delta
HoneySlug - Frobisher Says
Queasy Games - Sound Shapes
Plastic - Datura (Move game)
Clap Hanz - Hot Shots Golf Vita
Zindagi - MediEvil Moves/Sports Champions
Supermassive Games Tumble/Start The Party
Blue Point Studios - GoW HD Collection, Team ICO Collection
These are the 1st party IP's being worked on by 1st party studios:
Studio Cambridge - Killzone Vita
Naughty Dog Team 1 - The Last of Us
SCEJ Studio Japan - Gravity Daze/Rush
Team ICO - The Last Guardian
San Diego Studios - MLB: The Show, LittleBigPlanet Racers
Santa Monica Team 2 - God of War: Ascension
Then we have to consider their 1st party teams with unannounced projects (I have put some guesses down on what I think they are making):
Guerilla Games Team 1 - Killzone 4?
Guerilla Games Team 2 - New IP?
Naughty Dog Team 2 - Uncharted 4 for PS4?
Polyphony Digital GT Vita or GT PS4?
Evolution Studios - MotorStorm or New Racer for PS4?
Media Molecule - New IP for Vita?
Studio Liverpool - WipeOut PS3 DLC?
Santa Monica Team 1 - New IP for PS4?
Sucker Punch Productions - inFamous 3 or new IP for PS4?
Studio London - Move game?
SCE Bend - Uncharted Vita 2 or Syphon Filter Vita?