Source I do like how they approached it though. They realize it won't be genuinely popular unless they make it unique. They don't want another Halo or Call of Duty in terms of multiplayer since they'll just be swept away. But make something unique like Left 4 Dead (which is quite the popular multiplayer game) and you can have a surprise hit. Although really it's hard to make a game with both exceptional single and multiplayer. Doesn't matter to me anyway, I didn't like the first BioShock and I'm not tempted on trying the second. I'm always a fan of your standard "Horde Mode" survival type of game.