This is an unofficial patch for Heretic: SOTSR 1.3. It will essentially port the Heretic levels to Doom II so they can be played with Doom monsters and weapons. This patch creates quality Doom levels featuring very good classic style gameplay.
It's a tribute to John Romero, producer of Heretic, hence the name.
The necessary Heretic resources (levels, musics, sounds and graphics) are extracted at the user's computer. Both games are required for installation and only Doom II to play.


Patch installation is easy and safe.

+ Unzip RHERESY.ZIP in a new empty folder.
+ Then copy your Doom II and Heretic: SOTSR iwads there.
+ Launch HERPATCH.BAT. The pwad file RHERESY.WAD will be created.
+ You'll just need RHERESY.WAD, and of course your original DOOM2.WAD, to play.

This patch has been tested under Win 9x, 2k, XP and 7 32 bit.

IMPORTANT: Only the 32 bit versions of Vista and 7 can run the patch.

For linux and other unsupported OSes users sorry but you'll need to use a virtual machine to apply the patch (VMware, VirtualBox or Virtual PC). For DOS you'd need CSDPMI and SMARTDRV but it would be very slow.

You can download the official Heretic upgrade to version 1.3 from


The mod is fully compatible with ZDoom 2.0.63a, GZDoom 0.9.28, Skulltag 0.96f, Zandronum, ZDoomGL 0.81, Vavoom 1.32, EDGE 1.29, 3DGE and later versions.
For GZDoom you'll need lights.pk3 or lights.wad. There's an included weapons mod for EDGE but no splashes.
RHERESY is compatible with Brutal Doom, Project Brutality and Fearrific too! You'll need to load rheresy.wad first and then all your stuff. Lost souls get stuck sometimes with these mods however (use the skullfix mutator).
Risen3D 2.2, Odamex and ZDaemon run with limitations.
Everything else either might be unplayable or won't run at all.

To reach some areas or to escape from others sometimes you'll need to 'use' walls to activate a teleporter or a lift since you can't fly in Doom. Sometimes you'll need to jump to reach some platforms but this is rare.


Youtube playlist:

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One single player video with GZDoom 1.9.1 and another one with Zandronum 2.1.2 and Brutal Doom v20b.

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Romero's Heresy 0.15

Romero's Heresy 0.15

Full Version 7 comments

Patch for Heretic: SOTSR 1.3. Keep in mind that the patch was developed for DOS and works only on 32 bit OSes. Has been tested up to Windows 7 32 bit...

Skullfix mutator for Heresy and Brutal Doom

Skullfix mutator for Heresy and Brutal Doom

Full Version

Fixes the stuck lost souls in Brutal Doom. Works with Project Brutality to some extent.

JohnnyTheWolf - - 1,073 comments

I cannot get the patcher to work, but thankfully I found a wad repository that does host a copy of RHERESY.wad.

Here is the link for those who are interested:

Reply Good karma Bad karma+1 vote
Kaal979 - - 475 comments

Unfortunately installers
wont work under Windows7!

Reply Good karma Bad karma+2 votes
JohnnyTheWolf - - 1,073 comments

No download link?

Reply Good karma Bad karma0 votes
diabolo666 Creator
diabolo666 - - 46 comments

Will be released in a couple of days, thanks for your interest.
By the way can you watch the videos? I mean those in the videos section here in moddb, i get a black screen.

Reply Good karma+2 votes
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