Mark Rubin talked to Official PlayStation Magazine recently where he stated that Ghosts will not have a branching campaign like Black Ops 2, but it will have these ‘Easter egg-ish’ sub missions.

“We’re doing something a little different,” explains Rubin. “You know, we’re obviously two studios and [we] make games differently so we don’t want to just repeat what [Treyarch] has done”.

He talks about their philosophy behind this ‘Easter egg-ish’ missions:

“I’m trying to think how I can word this correctly, We do have a way where we… it’s almost ‘Easter eggish’ – if you figure out in the level that there is something you can do, you get some other objective and some other part of the mission that you didn’t know [about] if you didn’t sort of do something”.

He then continued:

“We don’t have the same branching system [Treyarch] do, obviously. But there is basically this way that, when you are in a mission, you might find something, if you grab it, then something opens up later in a different mission, or something happens later in that mission, that wouldn’t have happened if you didn’t do them”. When asked for clarification on the ‘the things’ you pick up Rubin explained that these objects were something that would occur, “several times throughout the whole campaign”.

SOURCE: Official PlayStation Magazine