# Metroxe/one-html-page-challenge

Can you create something cool without modern tools?

Repository: https://github.com/Metroxe/one-html-page-challenge
Canonical: https://ross.abutalabs.com/products/one-html-page-challenge
Homepage: https://onehtmlpagechallenge.com
Language: HTML
License Family: other
Topics: html, javascript, canvas, challenge, game, webdevelopment, webdesign, html5, css, coding-challenge, open-source, html5-game, html-css, html5-canvas, javascript-challenges, retro, oldschool, es6, chrome, github-pages
Last push: 2026-03-12T18:43:46+00:00

## Health v2 (maintenance only)
Score: 64/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 71, release rhythm 35, longevity 100
- inputs: {"age_days": 2622, "days_push": 174, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1381, forks 451 (observed 2026-08-28T04:04:33.998377+00:00)

## What it is
A community coding challenge and showcase where participants build anything—games, tools, art—inside a single HTML file under 1MB with no external files or network requests. Entries are submitted via pull request and displayed on a GitHub Pages gallery site.

## Use cases
- practice web development without frameworks
- find creative single-file HTML demos and games
- challenge myself to build a game in one HTML file
- learn vanilla JavaScript, CSS, and canvas techniques
- contribute an entry to an open-source coding challenge
- teach students the barebones of web development

## When to choose
- you want to sharpen fundamentals without libraries or build tools
- you enjoy constraint-based creative coding challenges
- you want inspiration from a gallery of self-contained web experiments

## When to avoid
- you need production-grade, maintainable multi-file projects
- you require external assets, CDNs, or network APIs
- you want a library or framework to integrate into your own codebase

## Facets
- artifact type: learning-resource
- maturity: active
- function: developer-tools, game, graphics
- domain: web-development, education, gaming-tools, frontend
- platform: browser, cross-platform
- tags: coding-challenge, single-file-html, vanilla-javascript, html5-canvas, community-submissions, view-source-culture, retro-web, web-server

## Member repositories
- Metroxe/one-html-page-challenge (main) score 64

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:33.998377+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 2026-08-30T04:40:09.299214+00:00, confidence not recorded.
  - readme: https://github.com/Metroxe/one-html-page-challenge (fetched 2026-08-28T04:04:33.998377+00:00, sha 4e1c60c1736b)
  - homepage: https://onehtmlpagechallenge.com (fetched 2026-08-29T11:56:00.349176+00:00, sha 4e11cbc11fa7)
- Data as of 2026-08-30T08:39:29.467469+00:00.