Codex (plural "codices", but "codexes" is also occasionally used) is the name of a source book for Warhammer 40,000 armies and factions containing background information, pictures, and rules.
Since its creation in the '80s, Warhammer 40,000 has had six distinct versions or editions. With each edition, the Codex of each army has changed to reflect the new rules and units.
Usually one codex is valid until a revision is made, so all codexes from the 5th, 4th and 3rd Editions of Warhammer 40,000 are still valid in the current, 6th Edition, unless a later version has replaced it. There have been instances of codices that are not "standalone". They were known as "mini-dexes". These were usually army lists that were variants of a mainstream army. An example would be the early 3rd Edition Codex: Catachans, which required the main Codex: Imperial Guard to use. Mini-dexes are more or less extinct nowadays.
Full List of Codices
See Main Article:Codices (List)
Current List of Codices and Expansions
This is the list of codexes which can be used to play today.
6th Edition Codices
5th Edition Codices
- Codex: Blood Angels
- Codex: Dark Eldar
- Codex: Grey Knights
- Codex: Imperial Guard
- Codex: Necrons
- Codex: Sisters of Battle
- Codex: Space Marines
- Codex: Space Wolves
- Codex: Tyranids
4th Edition Codices
6th Edition Expansions
5th Edition Expansions
- Planetstrike - Planetary invasions
- Planetary Empires - Map-based campaigns
- Battle Missions - Additional missions
4th Edition Expansions
- Codices (List) - For a list of all released Codices.