# OpenArc

> OpenArc is a free, fully static hub of lightweight open-source HTML5 games.
> Every title runs on plain HTML, CSS and JavaScript — no plugins, no downloads,
> no backend, no trackers. You can play instantly or self-host the whole catalog.

Last updated: 2026-10-11

## Key facts
- What it is: a static catalog of open-source HTML5 browser games.
- Catalog size: 76 entries — 7 playable and self-hosted here, 69 linked to upstream source.
- Licenses: MIT and other permissive licenses; re-use is permitted.
- Sources: itch.io, GitHub, Ludum Dare, Simple Game Tutorials.
- Self-hosting: one folder, no database, no API keys required.
- Tracking: none; games run client-side in the browser.

## Games
- **Snake** (openarc, MIT) — Classic snake — eat, grow, avoid the wall. Self-contained, no dependencies. → /games/snake.html
- **Tic-Tac-Toe** (openarc, MIT) — Minimal two-player Tic-Tac-Toe built in vanilla JS. → /games/tic-tac-toe.html
- **2048** (openarc, MIT) — Merge numbered tiles to reach 2048. Keyboard-controlled, dependency-free. → /games/2048.html
- **Memory Match** (openarc, MIT) — Flip tiles and find all eight emoji pairs. Fully keyboard accessible. → /games/memory.html
- **Breakout** (openarc, MIT) — Bounce the ball and clear every brick. Mouse or arrow keys control the paddle. → /games/breakout.html
- **Pong** (openarc, MIT) — Classic Pong against a simple AI. Keyboard or mouse paddle control. → /games/pong.html
- **Minesweeper** (openarc, MIT) — Reveal safe cells without hitting a mine. Keyboard and flag mode supported. → /games/minesweeper.html
- **Tetris** (simplegametutorials, MIT) — Stack and clear lines in this MIT-licensed browser Tetris. → /games/sgt-tetris.html
- **Asteroids** (simplegametutorials, MIT) — Rotate, thrust and shoot — a compact open-source Asteroids clone. → /games/sgt-asteroids.html
- **Minesweeper** (simplegametutorials, MIT) — Reveal safe cells without hitting a mine. Open-source logic. → /games/sgt-minesweeper.html
- **itch.io · open-source tag** (itchio, varies) — Browse indie games published with open-source licenses on itch.io. → /games/browse-itchio.html
- **Ludum Dare · game jam** (ludumdare, varies) — Entries from the Ludum Dare game jam, many released with source. → /games/browse-ludumdare.html
- **GitHub · trending HTML5** (github, varies) — Trending open-source HTML5 / Canvas / WebGL game repositories. → /games/browse-github.html
- **Slot Games** (openarc, MIT) — Seven Blender-MCP slot machines with sticky wilds, jackpot wheels, Hold & Win and cash collect. Pick a title, set your bet and lines, then SPIN. → /games/slot-games.html
- **Ancient Beast** (github, open-source) — Turn-based strategy board game pitting mutant animal factions against each other. Open-source HTML5. → /games/gh-ancientbeast.html
- **Kaetram Open** (github, open-source) — Browser-based MMORPG with a full open-source client and server. Play and read the source. → /games/gh-kaetram.html
- **Sandboxels** (github, open-source) — An element-based falling-sand sandbox game — combine hundreds of materials and watch simulations unfold. → /games/gh-sandboxels.html
- **Connect Four (c4)** (github, MIT) — A clean, dependency-free Connect Four playable in the browser, with AI opponent. → /games/gh-c4.html
- **Slither.io Clone** (github, open-source) — Open-source .io-style snake battle — grow by eating, avoid other players. Pure HTML5/Canvas. → /games/gh-slither-clone.html
- **BrowserQuest** (github, NOASSERTION) — DEPRECATED - A HTML5/JavaScript multiplayer game experiment → /games/gh-browserquest.html
- **pacman** (github, MIT) — 基于HTML5的吃豆人游戏 - 经典游戏开发样例_Pacman based on HTML5 → /games/gh-pacman.html
- **mykonos-island-voxels** (github, MIT) — A browser-based isometric island builder with the soft, sun-bleached look of Mykonos. Vanilla ES modules, no bundler, mobile-friendly. → /games/gh-mykonos-island-voxels.html
- **paint-board** (github, MIT) — 🎨  A powerful multi-end drawing board that brings together a lot of creative brushes to experience a whole new range of drawing effects! → /games/gh-paint-board.html
- **openscope** (github, NOASSERTION) — openScope Air Traffic Control Simulator → /games/gh-openscope.html
- **d-zone** (github, ISC) — An ambient life simulation driven by user activity within a Discord server → /games/gh-d-zone.html
- **webosu** (github, MIT) — ➤⓵ web rhythm game (unofficial osu!) http://osugame.online/ → /games/gh-webosu.html
- **mk48** (github, AGPL-3.0) — Mk48.io ship combat game (repository commits may lag behind game updates) → /games/gh-mk48.html
- **billiards** (github, GPL-3.0) — billiards physics in the browser → /games/gh-billiards.html
- **kiomet** (github, AGPL-3.0) — Kiomet.com real-time strategy game (repository commits may lag behind game updates)  → /games/gh-kiomet.html
- **ParrotHunt** (github, MIT) — ParrotHunt - ThreeJS WebGL game (http://parrothunt.nergal.se) → /games/gh-parrothunt.html
- **OpenFrontIO** (github, AGPL-3.0) — Online browser-based RTS game → /games/gh-openfrontio.html
- **biomes-game** (github, MIT) — Biomes is an open source sandbox MMORPG built for the web using web technologies such as Next.js, Typescript, React and WebAssembly. → /games/gh-biomes-game.html
- **cube-composer** (github, MIT) — A puzzle game inspired by functional programming → /games/gh-cube-composer.html
- **Hypersomnia** (github, AGPL-3.0) — Multiplayer top-down shooter made from scratch in C++. Web version: https://play.hypersomnia.io Made in 🇵🇱 → /games/gh-hypersomnia.html
- **Mindustry** (itchio, open-source) — Mindustry is an open-source game by Anuke, published on itch.io — a strategy game. → /games/itch-mindustry.html
- **Friday Night Funkin'** (itchio, open-source) — Friday Night Funkin' is an open-source game by ninjamuffin99, published on itch.io — a rhythm game. → /games/itch-funkin.html
- **Battle for Wesnoth** (itchio, open-source) — Battle for Wesnoth is an open-source game by Wesnoth, published on itch.io — a strategy game. → /games/itch-battle-for-wesnoth.html
- **SuperTuxKart** (itchio, open-source) — SuperTuxKart is an open-source game by supertuxkart, published on itch.io — a racing game. → /games/itch-supertuxkart.html
- **Pocket Bird - Portable Desktop Pet** (itchio, open-source) — Pocket Bird - Portable Desktop Pet is an open-source game by Idrees, published on itch.io — a casual game. → /games/itch-pocket-bird.html
- **OpenRA** (itchio, open-source) — OpenRA is an open-source game by OpenRA developers, published on itch.io — a strategy game. → /games/itch-openra.html
- **ClanGen** (itchio, open-source) — ClanGen is an open-source game by SableSteel, published on itch.io — a simulation game. → /games/itch-clan-gen-fan-edit.html
- **Catburglar** (itchio, open-source) — Catburglar is an open-source game by JohnGabrielUK, published on itch.io — a arcade game. → /games/itch-catburglar.html
- **RetroArch** (itchio, open-source) — RetroArch is an open-source game by RetroArch, published on itch.io — a emulator game. → /games/itch-retroarch.html
- **Nanosaur** (itchio, open-source) — Nanosaur is an open-source game by Iliyas Jorio, published on itch.io — a action game. → /games/itch-nanosaur.html
- **0 A.D: Empires Ascendant** (itchio, open-source) — 0 A.D: Empires Ascendant is an open-source game by Wildfire Games, published on itch.io — a strategy game. → /games/itch-0ad.html
- **DELTARUNE Desktop Pet** (itchio, open-source) — DELTARUNE Desktop Pet is an open-source game by Immortal Bean, published on itch.io — a casual game. → /games/itch-dr-virtual-pet.html
- **Open Saber** (itchio, open-source) — Open Saber is an open-source game by Leandro Dreamer, published on itch.io — a action game. → /games/itch-open-saber.html
- **Cro-Mag Rally** (itchio, open-source) — Cro-Mag Rally is an open-source game by Iliyas Jorio, published on itch.io — a racing game. → /games/itch-cromagrally.html
- **UniMaker** (itchio, open-source) — UniMaker is an open-source game by NinStar, published on itch.io — a sandbox game. → /games/itch-unimaker.html
- **friendlyfiregame** (ludumdare, NOASSERTION) — Explore the world of “Friendly Fire” and meet all its inhabitants in a quest to save the world from an unknown destiny. → /games/ld-friendlyfiregame.html
- **ld47-fortLoop** (ludumdare, MIT) — Fort Loop: a 48h puzzle game for Ludum Dare 47. → /games/ld-ld47-fortloop.html
- **Holding-Out** (ludumdare, MIT) — Source for "Holding Out", a game where you grapple with customer support and zombies simultaneously. Made for Ludum Dare 53 in 48 hours. → /games/ld-holding-out.html
- **dragon-taxes** (ludumdare, MIT) — 🐲📝 Dragon Tax Return Simulator 2015 - A game made for Ludum Dare 33. → /games/ld-dragon-taxes.html
- **LD25** (ludumdare, NOASSERTION) — Colorful - Ludum Dare 25 (December 2012) entry. → /games/ld-ld25.html
- **ludum-dare-31** (ludumdare, varies) — The theme for LD31 was "Entire Game on One Screen". → /games/ld-ludum-dare-31.html
- **ld49** (ludumdare, varies) — Ludum Dare 49. → /games/ld-ld49.html
- **Pack** (ludumdare, MIT) — Source for "Pack", a cozy puzzler about packing your suitcase made for Ludum Dare 57. → /games/ld-pack.html
- **defold-ld48-game** (ludumdare, varies) — 3D shooter game made with Defold. Fuel a mysterious machine with blue boxes!. → /games/ld-defold-ld48-game.html
- **SpaceHoarder** (ludumdare, MIT) — A Unity 3D action game for Ludum Dare #42. → /games/ld-spacehoarder.html
- **Cave** (ludumdare, MIT) — Ludum Dare Jam #45. Theme: "Start with nothing". Game: Cave - 2D survival RPG with Dark Souls battle system. → /games/ld-cave.html
- **knight-general** (ludumdare, GPL-3.0) — Turn-based strategy game in 72 hours for Ludum Dare 42. → /games/ld-knight-general.html
- **LudumDare26** (ludumdare, varies) — My Ludum Dare 26 entry, "Minimalist TD". Programmed in Haxe using HaxeFlixel. → /games/ld-ludumdare26.html
- **Fallowtide** (ludumdare, MIT) — Source for "Fallowtide", a spooky farming deckbuilder made in 48 hours for Ludum Dare 52. → /games/ld-fallowtide.html
- **oneroom** (ludumdare, varies) — Ludum Dare #37. → /games/ld-oneroom.html
- **InternalBeyond** (github, NOASSERTION) — 【Project-IB】边界之外：离线运行的单文件个人网站式项目，旨于维系情感的连续性。A single-file offline personal website, built to sustain the continuity of feeling. → /games/gh-internalbeyond.html
- **reldens** (github, MIT) — Reldens - You can make it - Open Source MMORPG Platform → /games/gh-reldens.html
- **pip-web** (github, MIT) — Casual poker, redesigned — clean single-player Texas Hold'em. Play money, no account needed, no fake felt. → /games/gh-pip-web.html
- **yunyin-xiuxian** (github, NOASSERTION) — 《云隐修仙录》是一款文字修仙放置游戏  → /games/gh-yunyin-xiuxian.html
- **danoniplus** (github, MIT) — 🍙 Dancing☆Onigiri (CW Edition) - Web-based Rhythm Game → /games/gh-danoniplus.html
- **quick-dungeon-crawler-rpg-od** (github, AGPL-3.0) — Quick Dungeon Crawler on Demand is an open-source endless dungeon crawler with randomized floors, enemies and items. It's based on the source code of Dungeon crawler on Demand, by  → /games/gh-quick-dungeon-crawler-rpg-od.html
- **kingdomarchitect** (github, NOASSERTION) — Medieval simulation/city builder game for the browser. → /games/gh-kingdomarchitect.html
- **mario-maker** (github, varies) — Classic Mario Game with Level-Editor → /games/gh-mario-maker.html
- **Puzzle** (github, NOASSERTION) — grrd's Puzzle - a HTML5 PWA jigsaw puzzle game → /games/gh-puzzle.html
- **opensro** (github, AGPL-3.0) — 🏯 Silkroad Online v1.150 rebuilt end to end: a WebGPU browser client 🎮, a Go game server ⚔️ and the asset pipeline 🧰 that ties them together. Play in your browser. → /games/gh-opensro.html
- **type-pal** (github, GPL-3.0) — 用 TypeScript 从零重写《仙剑奇侠传》（1995），浏览器里能通关，附可视化编辑器 · A from-scratch TypeScript remake of PAL (1995) with a visual editor. Unofficial fan project. → /games/gh-type-pal.html
- **Fate** (github, MIT) — Fate is a fast-paced first-person shooter where players battle dangerous mythical monsters from an array of unique fantasy environments. As the levels progress the enemies get more → /games/gh-fate.html

## FAQ (frequently cited answers)

Q: What is OpenArc?
A: A free static catalog of lightweight open-source HTML5 games you can play in a browser or self-host.

Q: Are the games open source?
A: Yes. Every entry carries a license (most are MIT) and links to its source repository.

Q: Do I need to install anything?
A: No. Games run in the browser with plain HTML, CSS and JavaScript; no plugins, downloads or accounts.

Q: Does OpenArc track visitors?
A: No. Zero analytics, cookies and third-party trackers; games execute locally.

Q: How do I self-host it?
A: Run scripts/build.py and upload dist/ to any static host (Netlify, Cloudflare Pages, GitHub Pages, R2, S3).

## Machine-readable catalog
- /data/games.json — full game metadata as JSON.
- /sitemap.xml — indexable URLs.