Codex

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A codex entry for the Doom Slayer, taken from Doom (2016).

For the quest item from Hexen, see Daemon Codex.

The Codex is the protagonist's mobile database of information on monsters, weapons, items, upgrades, and plot elements in Doom (2016), Doom Eternal, and Doom: The Dark Ages. It automatically updates with new information as monsters are killed and items are collected, and can be referenced at the player's convenience, taking the place of Doom 3's PDAs and functioning in a manner similar to the scan log in the Metroid Prime series.

In Doom (2016), some data log messages are acquired from datapads. In Doom Eternal and its expansions, almost every level contains flaming book pages that can be collected to unlock Codex entries; transmissions from the ARC can also be downloaded from the Fortress of Doom.

Doom (2016) entries[edit]

Environments
Database
UAC personnel
Weapons
Monsters
Artifacts
Tutorials

Doom Eternal entries[edit]

Story of Earth
Story of the Sentinels
Story of Hell
Story of the Maykrs
Book of the Seraphs
Demons
Arsenal
Tutorials

The Ancient Gods - Part One[edit]

Book of the Seraphs
Characters and Locations

The Ancient Gods - Part Two[edit]

Story of Earth
Story of the Sentinels
Story of Hell
Characters and Locations

Doom: The Dark Ages[edit]

Weapons
Characters
Enemies
Locations

Gallery[edit]

Possessed entry from Doom (2016)
Possessed soldier entry from Doom (2016)
Imp entry from Doom (2016)
Hell razer entry from Doom (2016)
Remaining Human Populations - Part I entry from Doom Eternal
Codex page from Doom Eternal, depicting a demonic Crucible