Duke Nukem 3D: Megaton Edition is the definitive compilation of the landmark first-person shooter that includes enhanced versions of Duke Nukem 3D: Atomic Edition and three unique expansion packs as well as the original version of the classic game. The iconic Duke Nukem battles it out against a slew of alien foes in the original four episode \"Atomic Edition\" single-player campaign and three over-the-top expansion packs that take the loudmouthed hero to a tropical paradise a winter wonderland and even Washington D.C. Duke Nukem 3D: Megaton Edition features polished OpenGL visuals native compatibility with modern PC and Mac computers Steam Achievements and Steam Cloud support. Duke Nukem 3D: Megaton Edition will continue to receive feature updates including Steamworks-enabled online multiplayer new achievements and integration of additional Duke Nukem 3D expansion packs.