Summary THE AUTHORIZED ADD-ON PRODUCT FOR DUKE NUKEM 3D THE MELTDOWN CONTINUES WITH 500 MORE LEVELS! Duke!ZONE gives you 500 more shoot-em up!, totally ballistic!, action-packed! levels for Duke Nukem 3D. Duke!ZONE levels give you the same mind-blowing 3D action that you experienced in Duke Nukem 3D. Duke!ZONE utilizes Duke Nukem 3D'...