Rocksteady has confirmed that their much awaited game title "Batman: Arkham City" will feature a total of 40 hours of gameplay (main plus side mission).
In an interview to Guardian, game director Sefton Hill said, “The Side Missions in Batman: Arkham City are a good example. We have around 15 hours of story that’s off the main path,”
“It’s completely down to the player when and how they want to tackle this – there’s no right or wrong time. There’s no other medium that can offer this kind of flexible experience where the viewer gets to tailor the experience they want themselves.
“In terms of narrative structure, I think games are much more analogous to an episodic TV series than a film. You have, say, 15 hourly episodes to fill, each requiring its own narrative arc but each plugging into an overarching storyline.
“It requires a lot of planning to make sure that every single hour is consistent with each other, is feeding and driving towards a compelling crescendo, while remaining implicitly self-explanatory so players can pick up and play at any time and know what they are doing.”
Steton Hill also confirmed that the Batman: Arkham City main story campaign is 25 hour long.
“It takes over 25 hours to complete the main stories in Batman: Arkham City. To keep players engaged for this length of time, not only do the characters and the story need to progress, but the core mechanics of the game they are playing need to change and adapt as well.”