Few game franchises have has as many hardcore devotees as Call of Duty.

How did the series become so popular? How do regular unsuspecting gamers get transformed into CoD junkies? All it takes is six steps...

Nathan Birch also writes and draws stuff for Cracked and GammaSquad, is the creator of the webcomic Zoology and could always use some more Twitter followers. Chances are pretty good you're better than him at CoD





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