MineDoom

"Doom's original code inside Minecraft."

MineDoom runs id Software's original 1997 Linux Doom C release (linuxdoom-1.10) natively inside Minecraft's own process via JNI.

• No Virtual Machines (not VirtualBox or QEMU)

• No Pre-Recorded Video (not sheep or command-block video playback)

• Real 1997 C Engine: Compiled as a native library (minedoom.dll / libminedoom.so) and stepped directly by Minecraft 26.3.

Features

• Locked 35 Hz Timestep: Uses a fixed-timestep accumulator so Doom runs at its authentic 35 tics/second whether your Minecraft client is running at 30 FPS, 60 FPS, or 144+ FPS.

• Live PLAYPAL Hardware Palettes & Gamma: Full support for all 14 original colour palettes (red damage flashes, yellow item pickup tints, green radiation suit) and F11 gamma correction.

• Crash & Quit Isolation (setjmp / longjmp): Selecting Quit Game inside Doom or triggering an internal engine error safely jumps back to the JNI bookmark—Doom can never crash or close your Minecraft world.

How to Install & Add Your WAD File

Important: For legal reasons, MineDoom does not bundle any WAD files. You must supply your own WAD file (doom1.wad, doom.wad, or doom2.wad).

1. Install Fabric Loader and Fabric API for Minecraft 26.3.

2. Drop minedoom-1.0.0.jar into your .minecraft/mods/ folder.

3. Launch Minecraft, place a Doom Block, and right-click it.

4. Click the Open WAD Folder button on the screen (this opens .minecraft/config/minedoom/).

5. Copy doom1.wad (the freely distributable Doom Episode 1 Shareware WAD), doom.wad, or doom2.wad into the minedoom/ folder.

6. Click Check Again (or reopen the cabinet) and play!

Links & Source Code

• Source Code (GitHub): GITHUB

• Issue Tracker: ISSUES

License & Credits

• Licensed under GPL-2.0-only.

• Original DOOM engine source code Copyright (C) 1993–1996 id Software, Inc.

• Not affiliated with or endorsed by Mojang, Microsoft, id Software, or Bethesda.