

And for our thoughts on Banzia, check out TeamXbox's preview. For our thoughts on Corrosion, read GameSpy's preview. What we have below are our thoughts on Sub Pens, one of the three conventional levels in Map Pack 2. Inside Sub Pens - Watch or download the video here (HD available). We're also told that the new zombie level will introduce some new gameplay mechanics, but we'll have to wait and see what those are.

However, we do know that you're battling Imperial Japanese zombies and not Nazi zombies this time around. These three infantry-only levels will be accompanied by a brand new zombie level that we didn't get a chance to check out.

We here at IGN, along with fellow editors from TeamXbox and GameSpy, got a chance to check out three of the levels last week at Treyarch.
