Heretifier: Load a Doom Map but play Heretic [v170]

[lulle]

This GZDoom mod automatically converts any classic Doom (1993) map into a Heretic-style experience — complete with new old monsters, magical weapons, ambiance, and visual effects inspired by Raven Software's iconic dark fantasy shooter.

Every Doom map becomes a corrupted realm full of ethereal chaos, arcane projectiles, and enchanted enemies — no manual editing required. Drop it into your mod folder, load it with any PWAD, and witness Doom reborn through the dark mirror of Heretic.

Works with: Doom, Doom II, custom WADs
Requires: GZDoom 4.13+

➤ Features:

Auto-replaces Doom monsters with Heretic equivalents

Swaps weapons for fantasy-themed alternatives

Converts map textures, sounds, pickups, and skies

***INFO+++
This is not just a lazy replacer - weapons, monsters and items are heavily modified and balanced!!!
The monsters may look like from Heretic, but the attacks are from their Doom Counterparts.
Added Impaler Crossbow as a replacement for the SuperShotGun->Oh boy...that hurts...
Custom Monsters like the Lich Soul
***Why?***
There a are zillions of maps for Doom. Now you can play them as they were made for Heretic.

**BONUS***
Custom Maps!
++++++++++++++++++++++++++
Monsters: Mixed: Textures Full


Monsters: Full: Textures: none


***Credits***
Raven Software *ooh*
Impaler Crossbow: ETTiNGRiNDER
Details In the pk3.

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Doom: Playthrough Vanilla Maps e1m1 - e1m3


Download Latest:
https://drive.google.com/file/d/1e1YwlU ... sp=sharing

Changelog:
V170:
Fixed/changed some replacements monsters
Added attacks to some monsters
V160:
+DemonFighterGhost
+NEW AMP X1M) included (secret Lvl)
V150:
+More Texture Replacements
+Option: Mix Doom and Heretic Monsters
V130:
+TitleMap
+Auto-Retex (optional)
+Disable Monster replacement
+Custom Map X1M3
+ImpalerXBow Sisterweapon
+rebalanced, retweaked, redone:

[JohnnyTheWolf]

Nice job! Do you plan on doing the opposite next, i.e. a Doomifier that turns Heretic maps into Doom ones?

[Ihavequestions]

Romero's Heresy exists, but it doesn't run on 64-bit Windows. I guess it's some DOS software, haven't tried it yet. From what I understand from the description, you would need heretic.wad and doom2.wad to create the patch WAD.

[lulle]

Nice job! Do you plan on doing the opposite next, i.e. a Doomifier that turns Heretic maps into Doom ones?

I dont know if it's worth the effort. I made the the Doom to HereticConverter because it opens up a Zillion of Maps to play with Heretic.

But: I got another project in the works: Doom to Strife Converter, including animated doors and other Strife goodies




cya!

[lulle]

Romero's Heresy exists, but it doesn't run on 64-bit Windows. I guess it's some DOS software, haven't tried it yet. From what I understand from the description, you would need heretic.wad and doom2.wad to create the patch WAD.

Yeah, there are some projects out there, but they all took more or less the short road.
You cant just replace items, monster, and weapons 1:1 and call it a day. For Heretifier I created missing weapons and monsters, like the SuperShotgun -->ImpalerXBow.
Monsters: There some issues: There is the Zombieman and Shotgunner in Doom. Very similar foes. So I took the Knight which throws green and red axes and split it into two enemies. A weaker and a stronger one to match the counterparts from Doom. The stronger Knight is also recolored.
The Pain Elemental and the Archvile are also missing in Heretic, so i recreated them. They look like a monster from Heretic, but act like a Monster from Doom.
Even simple items like a replacement for the medikit are causing severe headaches. In Heretic the Quartz Flask is an item you have to use manually, so I created an option to automatically use the Flask when life drops below X %.
in the End, you have to balance it all out, so that when you load a Doom Map and play it in Heretifier, it has to have the same difficulty even with different weapons and monster.
And there are Artifacts in heretic and the Pod (which regenerates) and a lot of game mechanics that have to be converted. If I knew that all earlier, I havent started this project
Its not completly perfect yet, but I think I can do it...

cya!

[Doctrine Gamer]

I happened to be playing Herectic and Hexen last week, and now this mod is released.

Although I find Doom too futuristic for Herectic, except when we use maps with textures from Hexen 2 or Romero's Heresy, you've done a great job here.

[drfrag]

Wenas. Romero's Heresy was a dos patch to create the doom 2 wad and there was a lot of manual editing, it was too much work. Besides there's an updated version (0.15) uploaded to moddb, the old versions worked only on some computers since the patch was a mess with a lot of tools xD. In the end i uploaded the created doom 2 wad to archive.org. But even more there's a Romero's Heresy II decorate mod for ZDoom 2.3.1 and at some point i updated it to keep it GZDoom compatible, that was a much more automated process but it was not compatible with other mods. There were extra classes and weapons and modified monsters too. But in the end your project while it's pretty much the opposite looks interesting anyway.

[lulle]

I happened to be playing Herectic and Hexen last week, and now this mod is released.

Although I find Doom too futuristic for Herectic, except when we use maps with textures from Hexen 2 or Romero's Heresy, you've done a great job here.

It depends on the map and the textures used. A lot of the Doom textures are fitting almost perfectly like rocks, marble etc. I replaced only a few textures because if you replace 2 many it looks odd most of the times.

[lulle]

Wenas. Romero's Heresy was a dos patch to create the doom 2 wad and there was a lot of manual editing, it was too much work. Besides there's an updated version (0.15) uploaded to moddb, the old versions worked only on some computers since the patch was a mess with a lot of tools xD. In the end i uploaded the created doom 2 wad to archive.org. But even more there's a Romero's Heresy II decorate mod for ZDoom 2.3.1 and at some point i updated it to keep it GZDoom compatible, that was a much more automated process but it was not compatible with other mods. There were extra classes and weapons and modified monsters too. But in the end your project while it's pretty much the opposite looks interesting anyway.

Mr Defrag here! So finally time to put it all in a XP VM and play some levels.
Its the opposite approach, more a Doomifier than a Heretifier. I noticed you stumbling over the same issues like me, like the keys xD
you could make something like Heresy with zscript and acs to work for EVERY Heretic Map, but I dont see much reason because of ROMERO'S HERESY

[Ihavequestions]

But even more there's a Romero's Heresy II decorate mod for ZDoom 2.3.1 and at some point i updated it to keep it GZDoom compatible, that was a much more automated process but it was not compatible with other mods.

Duuuuuude, this is fantastic! Time to waste some time away in Heretic with my beloved Doom monsters.

¡Muchas gracias!

[Ihavequestions]

Ummm, wait a minute.

Hahaha!

[drfrag]

But what's that? Heresy II was a mod for Heretic. Y wenas.

[lulle]

Moderator please! This is getting to wierd here...

[lulle]

Version 110 with a custom map: Dock's Hangar. x-Over e1m1-e1m1

[Doctrine Gamer]

"There a are zillions of maps for Doom. Now you can play them as they were made for Heretic."

I tested it in Legacy of Rust to see how it behaved with the new textures, and it works well, although it doesn't replace the new monsters and new map sprites.

In any case, the replacement of the monsters went well, as the enemies from Herectic behave correctly with the monsters from Legacy of Rust.

It's towards the last stages that it gets strange, as the new enemies from Legacy of Rust appear more, but they're just details.

I like this mod, have you thought about making it compatible with Hexen?