# cataclysmbn/Cataclysm-BN

Cataclysm: Bright Nights: A fork/variant of Cataclysm:DDA by CleverRaven with a mod registry at https://mods.cataclysmbn.org/

Repository: https://github.com/cataclysmbn/Cataclysm-BN
Canonical: https://ross.abutalabs.com/products/cataclysm-bn
Homepage: https://docs.cataclysmbn.org
Language: C++
License: NOASSERTION
License Family: other
Topics: game, c-plus-plus, zombies, roguelike, cataclysm, sci-fi, survival
Last push: 2026-09-02T17:37:50+00:00

## Health v2 (maintenance only)
Score: 91/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 100, release rhythm 74, longevity 100
- inputs: {"age_days": 4381, "days_push": 0, "days_rel": 95, "gap_med": 34, "n_releases_24m": 10}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1205, forks 446 (observed 2026-09-03T02:15:09.838388+00:00)

## What it is
Cataclysm: Bright Nights is an open-source turn-based roguelike survival game set in a procedurally generated post-apocalyptic world, forked from Cataclysm: Dark Days Ahead. It is written in C++ with JSON and Lua modding support and ships with a community mod registry.

## Use cases
- play a post-apocalyptic zombie survival roguelike
- survive in a procedurally generated open world with vehicles and crafting
- create custom mods using JSON and Lua
- contribute to an open-source C++ game engine
- find and install third-party mods from a mod registry
- play a deep turn-based survival game on Linux, Windows, or macOS

## When to choose
- you want an actively maintained fork of Cataclysm: DDA with its own feature direction
- you want a free, open-source, deeply complex survival roguelike
- you want to mod a game via JSON and Lua with good documentation
- you prefer stable release cadence plus experimental builds

## When to avoid
- you want a graphical action game rather than a tile/ASCII turn-based roguelike
- you want a lightweight, quick-to-learn game
- you rely on third-party launchers, which are unsupported
- you need a game under a standard OSI license (license is non-standard)

## Facets
- artifact type: application
- maturity: active
- function: game, simulation
- domain: gaming-tools, entertainment
- platform: windows, cross-platform
- tags: roguelike, survival, post-apocalyptic, zombies, sci-fi, cataclysm-dda-fork, modding, lua-modding, procedural-generation, turn-based, game-development, linux, macos, desktop

## Member repositories
- cataclysmbn/Cataclysm-BN (main) score 91

## Provenance
- Observed fields: from GitHub, fetched 2026-09-03T02:15:09.838388+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 2026-08-30T06:21:26.352826+00:00, confidence not recorded.
  - readme: https://github.com/cataclysmbn/Cataclysm-BN (fetched 2026-09-03T02:15:09.838388+00:00, sha 5bc12156373b)
  - homepage: https://docs.cataclysmbn.org (fetched 2026-08-29T12:28:40.492653+00:00, sha 0b3e109b763f)
  - site_page: https://docs.cataclysmbn.org/contribute/docs (fetched 2026-08-29T12:28:40.501322+00:00, sha af7e6fa6b2b4)
  - site_page: https://docs.cataclysmbn.org/contribute/changelog_guidelines (fetched 2026-08-29T12:28:40.503019+00:00, sha 2163e4ee9b3f)
- Data as of 2026-08-30T08:39:29.467469+00:00.