Uncharted 3's campaign is what you'd expect: cinematic adventure with climbing, shooting and good acting. Uncharted 3's competitive multiplayer is what you've been able to play for over a month, if you were a customer at Subway and took up the offer to download the full suite of competitive multiplayer for free.
Uncharted 3's co-op campaign is the surprise. How does it work? How does this "alternate timeline" version of the series start? We played part of the first chapter today and can show you how it comes together. Check out the video.
Considering the increasing prevalence of co-op in video game story modes, who's to say this kind of thing won't be the main way to play some Uncharted of the future?