COMMUNITY INTEGRATION

HereticArchipelago randomizer mod

Reassemble a fantasy arsenal through the multiworld. Unlock Heretic's maps and colored keys in a shuffled route, with episode selection and optional extra pickup checks.

Maintained by KScl / Kay Sinclaire, Daivuk / David St-Louis

Installation guide Maintainer repository

Reviewed build: APDoom 2.0
OS: Windows, Linux
Last reviewed: 8 Sept 2026
Installation: Manual installation

How the game changes

Selected weapons, keys, powerups and level exits send checks. Closely grouped pickups are reduced by default; Check Sanity restores extra locations.
Receive map access, level-specific keys, weapons, ammunition, armor, healing and powerups from other slots.
Select episodes and choose all-level or boss-level completion. Later expansion episodes can be enabled separately.
Shuffle monsters, pickups and music; configure difficulty, starting map scrolls, advanced routes and reset-on-death behavior.
Split the Bag of Holding into ammunition-type capacity upgrades. A hub tracker shows map access, owned keys and outstanding checks; DeathLink is optional.

Explore game mechanics

Before you start

Steam's current purchase is Heretic + Hexen. This entry covers original Heretic only, not Hexen or every included campaign; artwork and review totals describe the collection.
Use APDoom 2.0 with original DOS HERETIC.WAD data. Its launcher detects supported Steam installations; remastered WAD support is not guaranteed.
The core APWorld works with the stable client. Optional beta APWorlds add other features and should not be confused with the core options described here.
Old guides still link unsupported APDoom 1.2.0. Install the current 64-bit build into a fresh directory and back up prior saves before migration.
Optional death-reset puzzle logic and Pro tricks are intended for knowledgeable players. Increasing Check Sanity can substantially increase the amount of collection.
Native Linux AppImage and Steam Deck support are explicitly documented alongside Windows. Support for arbitrary custom mods or same-map co-op is not established.

Read all setup notes