# DCurrent/openbor

OpenBOR is the ultimate 2D side scrolling engine for beat em' ups, shooters, and more!

Repository: https://github.com/DCurrent/openbor
Canonical: https://ross.abutalabs.com/products/openbor
Homepage: http://www.chronocrash.com
Language: C
License: BSD-3-Clause
License Family: permissive
Topics: side-scroller, fighting-game, streets-of-rage, final-fight, engine
Last push: 2026-08-25T00:57:19+00:00

## Health v2 (maintenance only)
Score: 67/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 8, longevity 100
- inputs: {"age_days": 3441, "days_push": 9, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1237, forks 157 (observed 2026-08-28T04:04:05.387490+00:00)

## What it is
OpenBOR is a royalty-free, sprite-based 2D side-scrolling game engine optimized for beat 'em ups (Double Dragon, Streets of Rage, Final Fight style) but flexible enough for shooters and other genres. It includes a built-in script engine and graphical suite, and runs community-created game modules, with dozens of finished games available through its community site.

## Use cases
- build a 2d beat em up game
- make a streets of rage or final fight style brawler
- create a side scrolling arcade game
- play fan-made beat em up modules
- engine for sprite-based 2d shooters
- tinker with an existing game module to learn game making
- script custom gameplay for a 2d scrolling fighter

## When to choose
- you want to create a sprite-based 2D side-scrolling beat 'em up or similar arcade genre
- you prefer a mature engine with a large catalog of finished modules and an active community for support
- you want to start by editing existing game modules rather than coding from scratch
- you need a built-in scripting engine and graphical tools without licensing costs

## When to avoid
- you are building 3D games or non-side-scrolling perspectives better served by Unity, Unreal, or Godot
- you need a general-purpose modern engine with a 3D pipeline and marketplace ecosystem
- you require platform targets outside the ports the OpenBOR team maintains
- you want an engine with mainstream tooling, documentation, and hiring ecosystem

## Facets
- artifact type: framework
- maturity: active
- function: game-engine, game, interpreter, graphics
- domain: gaming-tools
- platform: cross-platform
- tags: beat-em-up, side-scroller, brawler, sprite-based, retro-gaming, game-modules, fan-games, scripting, arcade, game-development

## Member repositories
- DCurrent/openbor (main) score 67

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:05.387490+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 2026-08-30T08:21:49.794627+00:00, confidence not recorded.
  - readme: https://github.com/DCurrent/openbor (fetched 2026-08-28T04:04:05.387490+00:00, sha 2809f72f444d)
  - homepage: http://www.chronocrash.com (fetched 2026-08-29T12:20:56.367708+00:00, sha ba977b26828c)
- Data as of 2026-08-30T08:39:29.467469+00:00.