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PC port · MS-DOS → PC

NBlood (Blood source port, with Rednukem and PCExhumed)

A reverse-engineered port of Monolith's Blood (1997) on EDuke32 technology, for modern Windows (and Linux and Mac from source), with Cryptic Passage support. The same repo has Rednukem and PCExhumed.

WorkingSource portNeeds your own copyr14388Updated

You need your own copy of Blood. This port only runs with files from a copy you own; there is no download or play button here. No copy? These play in your browser right away, no files needed: BO1 Zombies (vel.gg), GTA 3 Online (quenq III Web), The Simpsons: Hit & Run WASM.

What you need

The files from your own Blood 1.21 (a Steam or GOG copy works without extra setup; Cryptic Passage optional), plus a Windows PC, or Linux/Mac if you build it.

Official releases ↗GitHub repository ↗

We do not host any files. Only download from the project's official source.

Every version of Blood 2

  1. NBlood (Blood source port, with Rednukem and PCExhumed)This page

    WorkingSource port

    Runs on Windows (32-bit and 64-bit), Linux and macOS (build from source)Needs files from a copy you ownr14388 · Sep 14, 2026

    GitHub ↗

  2. NBlood

    ActiveSource port

    Reverse-engineered ports of Build games using EDuke32 engine technology and development principles (NBlood/Rednukem/PCExhumed)

    ★ 820r14388 · Sep 14, 2026

    GitHub ↗

We link to each project's own page and host no game files. Version data from project pages, our daily checks and awesome-decomp-games (CC0).

Short answer

NBlood is a reverse-engineered source port of Monolith’s Blood (1997), built on EDuke32 engine technology, that runs the original game on modern Windows (and Linux or Mac if you build it). Steam and GOG copies work without extra setup. The same project includes Rednukem (Redneck Rampage) and PCExhumed (Powerslave). Latest build: r14388, 14 September 2026.

This site is not affiliated with NBlood, Monolith, Atari or Nightdive Studios. We do not host any files and only link the project’s official pages.

What it is

Blood, Monolith’s 1997 horror shooter on Ken Silverman’s Build engine, never had its source code released. Nightdive’s official re-release, Blood: Fresh Supply, came out in 2019.

NBlood is one of the “reverse-engineered ports of Build games using EDuke32 engine technology and development principles”. Nuke.YKT and contributors reconstructed the game’s code from the original binaries and paired it with EDuke32’s modernised Build engine. The project later added Rednukem (Redneck Rampage) and PCExhumed (Exhumed / Powerslave). Its code is also the basis of the Blood module in Raze.

Current status

  • Status: Working. Builds are published regularly; the latest, r14388 on 14 September 2026, includes NBlood, Rednukem and PCExhumed for 32-bit and 64-bit Windows.
  • Linux and macOS: build from source.

What you need

  • Your own Blood. A Steam or GOG copy needs no extra installation. Otherwise copy these files from Blood 1.21 into the NBlood folder: BLOOD.INI, BLOOD.RFF, GUI.RFF, SOUNDS.RFF, SURFACE.DAT, TILES000.ART to TILES017.ART and VOXEL.DAT (demo files optional).
  • Optional: Cryptic Passage files (maps CP01–CP09, CPBB01–CPBB04, CPSL.MAP, CRYPTIC.INI, CRYPTIC.SMK, CRYPTIC.WAV and the CPART files).
  • A Windows PC, or Linux or Mac with a build from source.

We do not link any copies of the game files.

How setup works (overview)

  1. Extract NBlood into a new folder (or into your Steam/GOG Blood install, where it finds the files itself).
  2. If needed, copy the Blood 1.21 files listed above into the NBlood folder.
  3. For CD music, add bloodXX.flac or .ogg tracks and enable Redbook audio in the sound menu.
  4. For cutscenes, copy the movie folder from your original CD into the NBlood folder.

Which Blood to play

  • Blood: Fresh Supply (Nightdive) is the official, commercial modern version.
  • NBlood is the free fan port for your original files, faithful to the 1997 game.
  • Raze plays Blood alongside Duke Nukem 3D and other Build games, using NBlood’s code.

FAQ

How do I play Blood (1997) on Windows 10 or 11?

Use NBlood, a reverse-engineered source port built on EDuke32 technology. If you have Blood from Steam or GOG installed, the README says no further installation is needed. Otherwise copy the listed files from Blood 1.21 into the NBlood folder.

Does NBlood support Cryptic Passage?

Yes. Copying the Cryptic Passage files (CP01 to CP09 maps, CRYPTIC.INI and others) into the NBlood folder enables the expansion, as the README lists.

How do I get CD music and cutscenes in NBlood?

For music, provide FLAC or OGG recordings named bloodXX.flac or bloodXX.ogg (XX is the track number) and turn on the Redbook audio option. For cutscenes, copy the movie folder from the original CD into the NBlood folder.

What are Rednukem and PCExhumed?

Sister ports in the same repository. Rednukem plays Redneck Rampage and PCExhumed plays Exhumed (Powerslave), both reverse-engineered on the same EDuke32 base.

Is NBlood the same as Blood Fresh Supply?

No. Blood Fresh Supply is the official 2019 re-release by Nightdive Studios. NBlood is a separate fan port that uses your original Blood files.

Unofficial. This page is written by an independent directory. It is not made by, endorsed by or affiliated with GT Interactive (developed by Monolith Productions) or Nuke.YKT and NBlood contributors (NBlood (Blood source port, with Rednukem and PCExhumed)'s author). We do not host any files, and we never link to game files, ROMs or ISOs.

Sources

This page was last updated on Nov 3, 2026. A date after a source is the day we read it. Versions and steps follow the official project; if they differ, the official source wins.

More ports

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