Agatha Christie: And Then There Were None retains most of the basic plot elements of Agatha Christie's novel of the same name; the major differences are the inclusion of the playable character, Patrick Narracott, and the creation of a range of possible endings. To further the connection between the game and its source material, Christie's novel was included in the North American PC release of the game. "Agatha Christie: And Then There Were None" was followed by two more games, "" and "". Since they were based on their respective novels, their plots were unrelated to this first game. Reactions to the game were mixed, with many
Agatha Christie: And Then There Were None to twelve items. New items go into the first available slot, and these items can be combined or examined throughout the game. The game's cursor is context-sensitive, and changes into a rotating gear when held over an item the player can interact with and use. "And Then There Were None" features a 2.5D graphics engine, which combines pre-rendered backgrounds with 3D-modelled characters. "And Then There Were None" is divided into 10 chapters. After completing a certain trigger event, the next chapter begins. The developers ensured that nothing essential to the game could be missed during the player's progression, although large