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There have been several expansions to the original game since release. Expansions are purchased separately and add significant content to the game (for example, new races, classes, continents, quests, and equipment). Additionally, the game is updated regularly through downloadable patches. The EQ expansions to date:

1. EverQuest: The Ruins of Kunark — March 2000
2. EverQuest: The Scars of Velious — December 2000
3. EverQuest: The Shadows of Luclin — December 2001
4. EverQuest: The Planes of Power — October 2002
5. EverQuest: The Legacy of Ykesha — March 2003
6. EverQuest: Lost Dungeons of Norrath — September 2003
7. EverQuest: Gates of Discord — February 2004
8. EverQuest: Omens of War — September 2004
9. EverQuest: Dragons of Norrath — February 2005
10. EverQuest: Depths of Darkhollow — September 13 2005
11. EverQuest: Prophecy of Ro — February 2006
12. EverQuest: The Serpent's Spine — September 2006
13. EverQuest: The Buried Sea — February 13, 2007
14. EverQuest: Secrets of Faydwer — November 13, 2007
15. EverQuest: Seeds of Destruction - scheduled for October 21, 2008