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.
Source: The Publisher Website.