The 20th Anniversary World Tour features updated graphics, new voice acting, and eight new levels that were created specifically for this release. The game also features several interactive elements, such as using elevator buttons, flipping switches, and breaking objects. Players navigate through various levels, using Duke’s arsenal of weapons, such as the pistol, shotgun, and rocket launcher, to defeat enemies. The game features Duke Nukem, a wisecracking, cigar-chomping hero, as he fights against aliens who have invaded Earth. Duke Nukem 3D: 20th Anniversary World Tour Free Download: About Game Duke Nukem 3D: 20th Anniversary World Tour Free Downloadĭuke Nukem 3D: 20th Anniversary World Tour Free Download PC Game in a pre-Installed Direct Link With Latest Updates and Multiplayer.