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# ECWolf - RetroBIOS

Type | standalone + libretro
Classification | game_engine
Source | https://github.com/libretro/ecwolf
Upstream | https://bitbucket.org/ecwolf/ecwolf
Version | 1.3.99999
Profiled | 2026-03-23
Cores | ecwolf
Systems | wolfenstein3d

Technical notes

Wolfenstein 3D source port by Braden Obrzut. Plays Wolf3D (wl6/wl1), Spear of Destiny (sod/sdm), Super 3D Noah's Ark (n3d), and community pk3 mods. Blake Stone and Rise of the Triad support flagged as Preview in upstream.

Requires ecwolf.pk3 — engine data package built from wadsrc/static/. Contains IWADINFO (game detection rules), palettes, sprites, map configs, DECORATE actor definitions, MAPINFO, SNDINFO, fonts, and localization strings. Without this file: "Could not open ecwolf.pk3!" fatal error.

Libretro: ecwolf.pk3 searched in system_dir. ref: libretro.cpp:831-832 (sysDir passed to SelectGame)

Standalone: ecwolf.pk3 searched in progdir (binary directory). ref: wl_main.cpp:1295 (progdir passed to SelectGame) Also: INSTALL_PREFIX/share/ecwolf/ on Linux (wl_iwad.cpp:648)

Game data files (vswap, gamemaps, vgagraph, audiot) loaded from content directory, not system directory. Auto-detects game variant by scanning lump contents against IWADINFO MustContain rules.

Libretro fork based on ECWolf 1.3.99999-dev (forked 2020-02-23). Upstream head at 1.5.0pre with broader game support.

1 files | 1 required, 0 optional | 1 in repo, 0 missing

`ecwolf.pk3` -required : ECWolf engine data package

- MD5: `c011b428819eea4a80b455c245a5a04d`
- Source: `version.h:12 (MAIN_PK3), wl_iwad.cpp:642-657 (open + fatal), libretro.cpp:831-832 (sysDir)`
- Platforms: lakka, retroarch, retrobat, retrodeck, retropie
- Built from wadsrc/static/ via zipdir. Contains IWADINFO (game detection rules), palettes (wolfpal, spearpal, blakepal, noahpal), map lump remappers (wl6map, sodmap, etc.), DECORATE actor definitions, MAPINFO, SNDINFO, SNDSEQ, textures, sprites, fonts, and localization strings. md5 from .info, not validated by code.

Generated on 2026-03-25T14:56:43Z