Quantic Dream developed Heavy Rain exclusively for the PS3 and is making Beyond: Two Souls exclusively for the PS3 as well.  Quantic Dream co-CEO Guillaume de Fondaumiere says nature of the Sony partnership has encouraged them to remain an exclusive PlayStation developer. 

"We proved with Heavy Rain that we can be profitable by making a game for just one platform. Would we have made more money by going multi-platform? Of course, but on the other hand, we wouldn't be working with Sony as a publisher," he said to CVG. "This isn't a partnership where we are forced by a big company into giving immediate results. That's fantastic for a studio like us. Ever since we started our partnership, Sony just said it was going to give us the money to build these games and we said we were going to work as hard as we could and reward it for its trust.

"We're certainly not going to change partner for the sake of making more money; that's not the philosophy behind our studio. As long as we can create the games we want to create, we'll stay with Sony."

Sony paid the entire bill for Heavy Rain when they signed Quantic Dream in 2006.  The game ended up selling over 2 million copies and was a critical success as well, and Fondaumiere thinks that could have led to conflicts with almost any other publisher but Sony.

"There was this one thing about our partnership with Sony," he said. "After the success of Heavy Rain we sort of knew they were going to ask us to make a Heavy Rain 2, and we said please understand we're not going to do that. We said we still believe we can do so much more with something else, and they accepted our idea."