Call of Duty: World at War wasn't that good, the only thing that really attracted people was Co-op. The nazi zombies is what really sold it.

Everybody refered to Call of Duty: World at War as CoD5 when that wasn't the technical name also.

Above all online wasn't the best, guns were over powered, and all the beginner guns would be so weak you couldn't top the higher levels like you could do in Call of Duty 4: Modern warfare.