# phoboslab/Impact

HTML5 Game Engine

Repository: https://github.com/phoboslab/Impact
Canonical: https://ross.abutalabs.com/products/impact
Language: JavaScript
License: MIT
License Family: permissive
Last push: 2024-11-07T13:23:50+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": 3044, "days_push": 664, "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 2123, forks 213 (observed 2026-08-28T04:06:16.686970+00:00)

## What it is
Impact is an HTML5 game engine written in JavaScript for building 2D browser games, including Weltmeister, its built-in level editor. It is MIT-licensed and ships with example games to help developers get started.

## Use cases
- build a 2d game in the browser
- html5 game engine for javascript
- create platformer games with canvas
- level editor for html5 games
- make browser games without flash
- 2d game engine with tilemaps

## When to choose
- you want a mature, MIT-licensed 2D engine for browser games
- you need an integrated level editor (Weltmeister) for tile-based games
- you prefer a lightweight JavaScript engine over heavyweight frameworks

## When to avoid
- you need 3D rendering or modern WebGL pipelines
- you want a large ecosystem with frequent updates and active community tooling
- you are building native mobile or desktop games rather than browser games

## Facets
- artifact type: framework
- maturity: maintenance
- function: game-engine, graphics, animation, gui
- domain: web-development, gaming-tools, cross-platform
- platform: browser, cross-platform
- tags: html5, 2d-games, canvas, level-editor, weltmeister, javascript, game-development, web-server

## Member repositories
- phoboslab/Impact (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:16.686970+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 2026-08-30T02:52:51.147560+00:00, confidence not recorded.
  - readme: https://github.com/phoboslab/Impact (fetched 2026-08-28T04:06:16.686970+00:00, sha c27b41a79242)
- Data as of 2026-08-30T08:39:29.467469+00:00.