While I have very little doubt I am the only one in Off-Topic who actually plays COD, I just got to play one round in each of the Escalation pack's maps and have to say they are all a lot of fun. I was never too impressed with the last map pack, and Kawloon was the only new level in that one that really excited me the first time I played it. So far I'd say Escalation is a much better bundle. And while zombie maps don't interest me in the slightest, Call of the Dead holds some gimmicky appeal to that at least puts it above the other zombie levels.

Whether or not it is worth $15 really depends on the person. Four new maps for the price of a dinner out isn't so bad if it means hours of fun online with old friends, but to most people it is borderline highway robbery.