According to Wiki:
Japan
- Level-5 – White Knight Chronicles, Rogue Galaxy, Dark Cloud
- Game Republic – Folklore, Genji
- Q-Games – PixelJunk
- Media.Vision – Wild Arms
- Pyramid – Patapon
- From Software – Demon's Souls
North America
- Insomniac Games – Resistance series, Ratchet & Clank series
- Sucker Punch Productions – inFamous, Sly Cooper
- ThatGameCompany – Flow, Flower
- Ready at Dawn Studios – God of War: Chains of Olympus, Daxter
- High Impact Games – Ratchet & Clank: Size Matters, Secret Agent Clank
- Eat Sleep Play – Twisted Metal: Head On
- Slant Six Games – SOCOM: U.S. Navy SEALs Confrontation, SOCOM: U.S. Navy SEALs Fireteam Bravo 3
- LightBox Interactive
- Titan Studios - Fat Princess
Europe
- Quantic Dream – Heavy Rain
- Relentless Software – Buzz!
- Media Molecule – LittleBigPlanet
- Ninja Theory – Heavenly Sword
- EPOS Game Studios - Crash Commando
These are SONY's Second Party devs....
the statement "The agreement has been reached. It will not effect "current" titles in development."" leads me to believe that the company has worked on and/or is most likely currently working on games for non-SONY platforms.
Also it's quite clear that the company has a history of making RPG's....
that leaves:
Level-5
From Software
Media.Vision
And to a minor extent Game Republic
4 ≈ One







