(Nazi) Zombie mode on its own is almost enough to justify buying one of the Treyarch Call Of Duty games alone. And World At War is where it started. What was once a single gimmicky survival mode has evolved into one of the biggest selling-points of the franchise and the legacy began here at Nacht Der Untoten. Inside three small rooms a legend was born befitting the geniuses that created one of the most popular franchises of all time. Whilst the actual bulk of the zombies 'story' didn't start until later maps it's unfair to say that these successive maps weren't as good or influential as the first but without Nacht, doubt suggests that COD would be the juggernaut that it is.