The story is mostly unrelated to Neverwinter Nights and follows the journey of an orphaned adventurer investigating a group of mysterious artifacts known as 'silver shards' and their connection to an ancient, evil spirit known as the King of Shadows. Neverwinter Nights 2 went into development in July 2004.
This sequel was designed with the Aurora Engine, also used by its predecessor, and the game's toolset was included in the game's release for players to use in designing their own adventures. The game's design team drew upon older role-playing video games, and decided that the player character would have to earn the respect of others by the things the character does.