It doesn't seem too unfair to compare Halo# and Bioshock single player campaigns which certainly makes Bioshock more deserving, well imo and I would hope others.
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I meant that the pacing in very different in those games. Halo is much closer to a Doom or Half-Life style of "guns blazing" action, while Bioshock is a much more methodical pace with some tension involved. I would liken Bioshock to a "thinking mans" shooter, while Halo was anything but.