# id-Software/DOOM-3-BFG

Doom 3 BFG Edition

Repository: https://github.com/id-Software/DOOM-3-BFG
Canonical: https://ross.abutalabs.com/products/doom-3-bfg
Language: C++
License: GPL-3.0
License Family: copyleft
Last push: 2024-08-21T11:58:28+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 5028, "days_push": 742, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 5370, forks 1443 (observed 2026-08-28T04:09:16.144328+00:00)

## What it is
The official GPL-3.0 source code release of Doom 3 BFG Edition, id Software's first-person shooter built on the id Tech 4 engine, written in C++. It ships engine and game code only; game assets must be purchased separately, and Steam integration, Bink video, and the 'Carmack's Reverse' stencil-shadow backend are excluded.

## Use cases
- compile and play doom 3 bfg from source with my steam game data
- create a source port or updated fork of the doom 3 engine
- study how a professional AAA shooter engine and renderer are implemented
- port the doom 3 engine to other platforms or modern compilers
- build mods or a new game on top of the id tech 4 engine
- read the source behind carmack's stencil shadow and virtual texture rendering

## When to choose
- You want to learn engine architecture from a classic, complete commercial shooter codebase
- You want a base for a community source port, mod, or modernized fork of Doom 3 BFG
- You own the game data and want to build the game executable yourself

## When to avoid
- You need Steam features, Bink video, or stencil shadows via the depth-fail method, which are stripped from this release
- You want an actively maintained engine - the README itself points to improved community forks as better starting points
- You expect a playable game out of the box - game data is not included and must be bought via Steam

## Facets
- artifact type: application
- maturity: maintenance
- function: game-engine, game, graphics
- domain: gaming-tools, graphics
- platform: windows, cross-platform
- tags: doom-3, id-tech-4, first-person-shooter, fps, source-port, engine-source-code, opengl, gpl, id-software, retro-gaming, game-development, desktop

## Member repositories
- id-Software/DOOM-3-BFG (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:09:16.144328+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T07:21:42.507261+00:00, confidence not recorded.
  - readme: https://github.com/id-Software/DOOM-3-BFG (fetched 2026-08-28T04:09:16.144328+00:00, sha 6665f2a076f2)
- Data as of 2026-08-30T08:39:29.467469+00:00.