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

  • Atera all-in-one platform IT management software with AI agents Icon
    Atera all-in-one platform IT management software with AI agents

    Ideal for internal IT departments or managed service providers (MSPs)

    Atera’s AI agents don’t just assist, they act. From detection to resolution, they handle incidents and requests instantly, taking your IT management from automated to autonomous.
    Learn More
  • AI-generated apps that pass security review Icon
    AI-generated apps that pass security review

    Stop waiting on engineering. Build production-ready internal tools with AI—on your company data, in your cloud.

    Retool lets you generate dashboards, admin panels, and workflows directly on your data. Type something like “Build me a revenue dashboard on my Stripe data” and get a working app with security, permissions, and compliance built in from day one. Whether on our cloud or self-hosted, create the internal software your team needs without compromising enterprise standards or control.
    Try Retool free
  • 1
    Darkfall Emulator

    Darkfall Emulator

    Develop an emulated Darkfall Online Server.

    This project is the development of an open source fully emulated Darkfall Online Server and reverse engineering the proprietary game engine that DFO uses, the SF3D engine as well as its source code.
    Downloads: 5 This Week
    Last Update:
    See Project
  • 2
    A tool based on Postgres Database and Java to allow statistical analysis of the sport of fencing tournament results.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 3
    EmGeeGen is a server-client information distribution system, tailored for use with the EmGee role playing system (though the theoretical platform should be useful for a variety of tasks).
    Downloads: 0 This Week
    Last Update:
    See Project
  • 4
    JiaND stands for "JiaND is a Nutritional Database", and it is an application to aid you in maintaining a healthy diet. It allows you to track ingredients, recipes, and meal plans, along with the nutritional content of all of these.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 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.
    Learn More
  • 5
    The Open Magic Data project (OMD) is an attempt to organize magic data (data used in the Magic: The Gathering (TM) game) into a format that allows for easy access by encoding it into XML. see the Home page for more details. http://omd.sourceforge.net/
    Downloads: 0 This Week
    Last Update:
    See Project
  • 6
    PHP/MySQL program which allows you to create a database driven, account based, web art board/community. You can install a number of Java Applets (provided separately) on this board and literally draw on the web.
    Downloads: 0 This Week
    Last Update:
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  • 7
    A Media Management project designed to keep track of all digital and physical media, and organize it in a completely user customizable way.
    Downloads: 0 This Week
    Last Update:
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  • 8
    This project is an customised, highly evolved open source L2J server emulation software. Main source bases mostly on L2JOfficial project files. Project is written in Java, Python, XML, HTML, SQL and so on. //// and is not available to all anymore. ho
    Downloads: 0 This Week
    Last Update:
    See Project
  • 9
    frCoder is a set of tools used to write, test, and simulate software written for the FIRST Robotics Competition (FRC). frCoder also includes basic libraries of common techniques used in the FRC.
    Downloads: 0 This Week
    Last Update:
    See Project
  • Dominate AI Search Results Icon
    Dominate AI Search Results

    Generative Al is shaping brand discovery. AthenaHQ ensures your brand leads the conversation.

    AthenaHQ is a cutting-edge platform for Generative Engine Optimization (GEO), designed to help brands optimize their visibility and performance across AI-driven search platforms like ChatGPT, Google AI, and more.
    Learn More
  • 10
    jMARS is a java implementation of the famous "Core Wars" application first described by A.K. Dewdney. Using eXtreme Programming combined with Java, EJB, and the Rich Client Platform it can be used as an educational tool to understand these technologies
    Downloads: 0 This Week
    Last Update:
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  • 11
    The end is nigh! A Role-Playing game that incorporates into a bulletin-board system written in PHP and Java. Advanced money and graphical systems incorporated in and out of the interactive experience make this a very fun and involving game.
    Downloads: 0 This Week
    Last Update:
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