Naughty Dog is developing a proper Co-Op game!

[Aldro]

KylieDog said:
Could apply all this to the co-op in Uncharted 2/3 multiplayer.

http://www.igameresponsibly.com/2013/12/02/naughty-dog-is-developing-a-cooperative-mode-in-an-upcoming-game/

 

"If you’re saying to yourself, “they’re talking about multiplayer.” No. They aren’t. There’s a separate listing for multiplayer."