Duke Nukem returns to his platforming roots in this throwback to his earlier games. This time, Duke fights his way across New York city's towering skyscrapers and through its gritty subway stations on the hunt for power-hungry villain, Mech Morphix. Mutants of every kind are thrown at Duke as he chases Morphix through eight large environments and avoids the green slime called GLOPP that's the cause of all the chaos.