Chapter

A "chapter" or "campaign" is what the developers of Guild Wars, ArenaNet, call a major expansion of the Guild Wars game series. Each chapters is stand-alone and must be purchased separately, but doesn't require any other versions of Guildwars to play.

ANet plans to release two chapters per year, and each chapter will have a development time of about 1 year. (This likely means that there are two separate groups working on expansions simultaneously.)

Each chapter adds large amounts of new content, but also includes common core content present in all chapters.

Chapters so far:
 * Chapter One: The original Guild Wars, released April 2005
 * Chapter Two: Guild Wars Factions, to be released Q2/2006
 * Chapter Three: in development since November 2005, title unknown, release date Q4/2006 (unconfirmed)