Diamond Edition

Neverwinter Nights Diamond Edition is the latest release of Neverwinter Nights, which includes the original game with the two expansions Shadows of Undrentide and Hordes of the Underdark. It also contains the Kingmaker expansion, which is a set of Premium modules and consists of Kingmaker, ShadowGuard, and Witch's Wake. These are identical to those that can be bought and downloaded from BioWare, but does not require an internet connection to authenticate.

Official information on BioWare's site