A campaign setting in Dungeons & Dragons is a ready-made setting in which to play. Campaign settings can include new player options such as races and classes, information about the world and its NPC and monster inhabitants for the DM, or even entire ready-to-play adventures.
Campaign settings in 4th edition include:
- Points of Light, also known as Nentir Vale, the core setting
- Dark Sun
- Eberron
- Forgotten Realms
DMs may also extend or replace campaign settings with homebrew content of their own.