# HaxeFlixel/flixel

Free, cross-platform 2D game engine powered by Haxe and OpenFL

Repository: https://github.com/HaxeFlixel/flixel
Canonical: https://ross.abutalabs.com/products/flixel
Homepage: https://haxeflixel.com/
Language: Haxe
License: MIT
License Family: permissive
Topics: 2d-game-engine, flixel, haxeflixel, haxelib, openfl, haxe, cross-platform, game-engine
Last push: 2026-08-23T21:22:28+00:00

## Health v2 (maintenance only)
Score: 77/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 35, longevity 100
- inputs: {"age_days": 5518, "days_push": 10, "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 2196, forks 519 (observed 2026-08-28T04:06:25.249295+00:00)

## What it is
HaxeFlixel is a free, open-source 2D game engine written in Haxe and built on top of OpenFL. It lets developers write one codebase and natively compile games to desktop, mobile, and web (HTML5) targets.

## Use cases
- build a 2D game with one codebase for desktop, mobile, and web
- make a cross-platform indie game in Haxe
- create an HTML5 browser game
- port an ActionScript 3 Flixel game to modern platforms
- learn game development with a 2D engine and tutorials
- build a tilemap-based platformer with sprites and animation

## When to choose
- you want a mature, free 2D engine with native multi-platform output
- you prefer Haxe and a large ecosystem of demos, addons, and documentation
- you're building 2D games like platformers, shooters, or puzzle games
- you want a Flixel-style engine descended from the original AS3 Flixel

## When to avoid
- you need 3D rendering or a full 3D game engine
- you want to work in a mainstream language like C#, C++, or JavaScript directly
- you need engine-level features like built-in networking or advanced physics out of the box

## Facets
- artifact type: framework
- maturity: stable
- function: game-engine, graphics, animation, ui-components
- domain: cross-platform, graphics
- platform: cross-platform, windows, browser
- tags: haxe, openfl, 2d, flixel, haxelib, native-compilation, html5, game-development, macos, linux, android, ios, desktop, mobile

## Member repositories
- HaxeFlixel/flixel (main) score 77

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:25.249295+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 2026-08-30T02:47:11.711811+00:00, confidence not recorded.
  - readme: https://github.com/HaxeFlixel/flixel (fetched 2026-08-28T04:06:25.249295+00:00, sha 4f33419d5e75)
  - homepage: https://haxeflixel.com/ (fetched 2026-08-29T10:27:27.590491+00:00, sha 0a6307d23169)
  - site_page: https://haxeflixel.com/documentation (fetched 2026-08-29T10:27:27.593732+00:00, sha 8bd1b7f0ea44)
  - site_page: https://haxeflixel.com/documentation/about (fetched 2026-08-29T10:27:27.595650+00:00, sha d33d2e1ac67a)
  - site_page: https://haxeflixel.com/documentation/getting-started (fetched 2026-08-29T10:27:27.597595+00:00, sha 57aebd9e9d3c)
- Data as of 2026-08-30T08:39:29.467469+00:00.