Browse free open source JavaScript Games and projects below. Use the toggles on the left to filter open source JavaScript Games by OS, license, language, programming language, and project status.

  • Our Free Plans just got better! | Auth0 Icon
    Our Free Plans just got better! | Auth0

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  • Orchestrate Your AI Agents with Zenflow Icon
    Orchestrate Your AI Agents with Zenflow

    The multi-agent workflow engine for modern teams. Zenflow executes coding, testing, and verification with deep repo awareness

    Zenflow orchestrates AI agents like a real engineering system. With parallel execution, spec-driven workflows, and deep multi-repo understanding, agents plan, implement, test, and verify end-to-end. Upgrade to AI workflows that work the way your team does.
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  • 1
    TauCeti Classic

    TauCeti Classic

    Frankenstein lived

    TauCetiClassic is an open source fork of Space Station 13 maintained by the Tau Ceti Station community. It builds upon the original SS13 codebase, offering a distinct roleplay-focused experience with custom mechanics, sprites, and maps. The repository includes the full game source, assets, and build scripts necessary to host servers and contribute to development. TauCetiClassic emphasizes immersive roleplay scenarios, detailed station environments, and unique content compared to other SS13 forks. The project is actively developed, with ongoing updates from its community of players and coders. By extending SS13, it provides both a playable multiplayer environment and a collaborative platform for experimentation.
    Downloads: 2 This Week
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  • 2
    Shoddy Battle (later known as Pokémon Lab) is a Pokémon simulator created by Cathy and bearzly and first released in July 2007. It allows users to play Pokémon matches against other people online. Shoddy Battle was highly influential on the game of competitive Pokémon because it was free and open source, scalable (700,000 battles per month during its peak), user customisable and extensible, and it provided unprecedented statistical data on player skill and Pokémon usage trends. Visit the web site for more information.
    Downloads: 12 This Week
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  • 3
    KoLmafia
    KoLmafia is a cross-platform desktop tool which interfaces with the online adventure game, Kingdom of Loathing. KoLmafia is written in Java ( Java 17 required), with binary releases in JAR format. We have moved to https://github.com/kolmafia/kolmafia, please come and find us there!
    Downloads: 2 This Week
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  • 4
    Hale

    Hale

    An RPG with turn based combat

    Hale is a turn based RPG with deep tactical combat and character customization. Included is a lengthy and varied campaign with many quests, items and monsters, visiting a variety of locales. The entire system is built to be moddable from the ground up.
    Downloads: 3 This Week
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  • Grafana: The open and composable observability platform Icon
    Grafana: The open and composable observability platform

    Faster answers, predictable costs, and no lock-in built by the team helping to make observability accessible to anyone.

    Grafana is the open source analytics & monitoring solution for every database.
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  • 5
    MOAGG is a 2D gravity game, combining the idea and fun of several existing games, such as Space Taxi (C64) and Gravity Force (Amiga).
    Downloads: 7 This Week
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  • 6
    winebox

    winebox

    Run Windows applications on any computer.

    WineBOX is an Open Source implementation of the Windows API and a program loader, allowing many unmodified Windows binaries to run on x86-based computers with out need a operative system.
    Downloads: 5 This Week
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  • 7
    Little "snasation" game involving Patty. Written in Java and JavaScript. Besides, there's a port of Flixel to Java and Slick2D, called Slixel, developed alongside with a platform game called QNQ: Qualcosa Non Quadra.
    Downloads: 2 This Week
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  • 8
    The fortbattle player replays a fortbattle of the browser game "The West" (http://www.the-west.net). It displays the battle like the ingame flash player, but you can control the speed, skip rounds and see some statistics. Ingame use req. GreaseMonk
    Downloads: 1 This Week
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  • 9
    DB Web Admin Provides access to your databases through a web interface. It gives users visibility into their SQL Server database instances. DBWA shows users Currently running SQL Queries, Historic Queries, and Fragmented Indexes. DBWA also allows users to kill currently running queries or run their own SQL queries. DBWA is implemented in ASP.NET MVC using C#. Previous Versions supported Oracle(PL/SQL and JSP), MS SQLServer (ASP), and MySQL/ODBC (C#.NET) versions.
    Downloads: 2 This Week
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  • MongoDB Atlas runs apps anywhere Icon
    MongoDB Atlas runs apps anywhere

    Deploy in 115+ regions with the modern database for every enterprise.

    MongoDB Atlas gives you the freedom to build and run modern applications anywhere—across AWS, Azure, and Google Cloud. With global availability in over 115 regions, Atlas lets you deploy close to your users, meet compliance needs, and scale with confidence across any geography.
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  • 10
    The name of this project is not a joke, but the name of a massively multiplayer online game playing in the time of the homo errectus. The entire game is easily customizable via XML to satisfy your
    Downloads: 2 This Week
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  • 11
    open-dis

    open-dis

    Open-DIS implements the IEEE DIS protocol in multiple languages.

    An open source implementation of the Distributed Interactive Simulation (IEEE-1278) standard in C++, C-Sharp, Objective-C, Java, Javascript and XML. Example applications including sending and receiving native DIS traffic, X-Plane plugin, and WebSocket/Javascript/WebGL applications. See the individual code directories for each package of interest. This project is inactive and has migrated to a GitHub project at https://github.com/open-dis
    Downloads: 2 This Week
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  • 12
    Maze War SVG

    Maze War SVG

    The famous Maze War game recreated as a modern web application.

    Maze War SVG is a web-based recreation of the Maze War game written for the Macintosh, circa 1987. That, in turn, was inspired by the first Maze War game, which was created in 1973 by Steve Colley, Howard Palmer and Greg Thompson.
    Downloads: 1 This Week
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  • 13
    Extinction Minijeux

    Extinction Minijeux

    Extinction-minijeux.fr est une plateforme de minijeux

    Extinction-MiniJeux.fr est la nouvelle plateforme d'Extinction.fr. Retrouvez les 3 MiniJeux emblématiques : Aaaah, Bouboum et Forteresse.
    Downloads: 1 This Week
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  • 14

    Mine Craft ~Z Flavor~

    Minecraft Presets Brought Together By Me "The Z"

    This Project Is Dedicated By Me, Zahidul Islam To Bring Dedicated Minecraft Gamers' With Presets Of Minecraft That Comes With Custom Theme Packs, Mods, Sprites,etc. Here I Shall Guarantee 100% Compatibility With All The mods And Theme Packs. ~Disclaimer~ Minecraft is Not Owned By Me But is Owned By Mojang and Hereby They Have The Final rule To Decide If I Have The Ability To Upload My Contents.
    Downloads: 1 This Week
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  • 15
    The intention of this project is to provide a platform where users could generate a tour for cycling or hiking based on their defaults (e.g. length, meters of height, ...).
    Downloads: 1 This Week
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  • 16

    Volity

    A platform for Internet-based multiplayer games.

    Volity is a platform for Internet-based multiplayer games. ****MIGRATED TO GITHUB**** Please see: https://github.com/jmacdotorg/Volity
    Downloads: 1 This Week
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  • 17

    rpgboss

    Built to be ease of use, with no programming knowledge, Multi-platform

    A 2d rpg game engine created to be ease of use. Built in Scala and libgdx. Also our community forums http://rpgboss.forumatic.com
    Downloads: 1 This Week
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  • 18
    12 Ways to Die on an Asteroid is a science-fiction/murder mystery adventure game. The engine is built in Java and designed to be modular. Included is a set of game-development tools, which enable anyone who knows JavaScript to make an adventure game.
    Downloads: 0 This Week
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  • 19
    Alcibiade Chess

    Alcibiade Chess

    Next generation web chess club

    From the creator of MKGI Chess Club comes this next generation chess club. Completely re-written from scratch on the latest software frameworks, it features: social networks connection, scalable data storage, stunning graphics and much more to come. This project has two parts: - A Java Chess library containing board models, rules and PGN format management - A complete Chess web application based on the core Java library
    Downloads: 0 This Week
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  • 20

    Aliza Gaming API

    An extensible development framework for roleplay games.

    AlizaGameAPI is a robust, open-source Java-based framework designed to streamline and enhance the development of 2D and 3D games. It offers a comprehensive set of tools, utilities, and libraries, empowering developers to create immersive and dynamic gaming experiences with ease. Key Features: Modular Architecture, Rich Graphics and UI Components, Comprehensive Game Logic and Character Management, Environment and World-Building Tools, Statistical and Mathematical Utilities, Enhanced Debugging and Logging, Data Management and Integration, Integrated LLM for NPC Dialog, Cross-Platform Compatibility Dive into the world of game development with AlizaGameAPI. Download the latest version, explore the detailed documentation, and join the community of developers pushing the boundaries of gaming technology.
    Downloads: 0 This Week
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  • 21
    Real-time space based strategy game utilizing both economic and military strategies.
    Downloads: 0 This Week
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  • 22
    Astro-Online - Widget Based Astrology
    Astro-Online is a web (now widget) based astrology program that can be downloaded and installed on any web server. Widgets (horoscopes) can also be shared through a share button on websites and personal pages (no installation necessary).
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    Downloads: 0 This Week
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  • 23
    AtreyuMS is a server emulator which replicates the functionality of a MapleStory server. The emulator is cross-platform compatible since it is coded in Java.
    Downloads: 0 This Week
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  • 24
    Online Strategy-RPG. No map adventures. Just duels. Fight with team of your heroes NPCs or another players to gain new abilities, spells and items. The game is inspired by Disciples and Heroes of Might & Magic series. See http://btrgame.com
    Downloads: 0 This Week
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  • 25

    Bengine

    Free strategy browsergame engine.

    Galactic strategy Open Source browsergame. Replacement of the former game Net-Assault.
    Downloads: 0 This Week
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