A portion of a Skewed and Reviewed interview with an EA rep...

SR: Roughly How Long will the game take to play?

EA: The game should take about as long as it took players to play through Dead Space.

I have Dead Space, but I haven't had a chance to play it. I don't remember hearing complaints about the game's length, though. How long can you really make an on-rails shooter? Oh, I'm sorry...a 'Guided First Person Experience'.

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