Caverns of Darkness

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For more information on this article, visit the Caverns of Darkness page on the Doom Wiki.
Caverns of Darkness
Author The Chaos Crew
Port ZDoom
IWAD MiniDoom2LogoIcon.png
Status Released
Link Caverns of Darkness at Doomworld/idgames
CoD compatibility patch at Doomworld/idgames
Top 10 for 2002 This mod was one of the ten 2002 mods to feature in the Top 100 WADs of All Time on Doomworld!


Caverns of Darkness is a mod originally created for a custom version of the Eternity Engine, entitled "COD Engine", included in the archive. Because it uses non-standard effects, Caverns of Darkness cannot be played in most source ports. However, Graf Zahl created a compatibility patch that allows to play this mod in ZDoom.

The "COD Engine" source code was released on May 4, 2002 by Christopher Lutz. Despite this, the source code was long considered lost, until it was re-released on May 26, 2019 by Joel Murdoch, both then part of the Eternity team.

How to play this mod in ZDoom

  1. Download both the mod (cc_cod.zip) and the compatibility patch (cod_zd.zip) from the /idgames archives.
  2. Extract cod-zd.pk3 from cod_zd.zip.
  3. Extract COD.WAD and CODLEV.WAD from cc_cod.zip.
  4. Open cod-zd.pk3 with an archiver, then drag and drop COD.WAD and CODLEV.WAD inside.
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  5. You can now play cod-zd.pk3 as if it were a normal ZDoom mod.

External links