These are taglines for the films

Night of the living dead     Witness the start of a new world.

Dawn of the dead             Dawn of hell has came to the new world

Day of the dead               The last hope of the the new world

Land of the dead              Humanity will have to live with the new world

Diary of the dead              The teenagers video to the end of the new world

Island of the dead             The humans plan to make a cure or the new world has won and humanity will be destroyed.