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.

  • Vibes don’t ship, Retool does Icon
    Vibes don’t ship, Retool does

    Start from a prompt and build production-ready apps on your data—with security, permissions, and compliance built in.

    Vibe coding tools create cool demos, but Retool helps you build software your company can actually use. Generate internal apps that connect directly to your data—deployed in your cloud with enterprise security from day one. Build dashboards, admin panels, and workflows with granular permissions already in place. Stop prototyping and ship on a platform that actually passes security review.
    Build apps that ship
  • 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
  • 1
    A massively multiplayer action game that revolves around an alien invasion of earth. The gameplay will be reminiscent of a hollywood blockbuster with everything being just a little bit over the top. The game will run until the humans either repel the a
    Downloads: 0 This Week
    Last Update:
    See Project
  • 2
    Magyar kártyázós játék. Többjátékos módra kihegyezve. Helyi hálózaton lehet játszani, Zsírt és Snapszert.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 3
    MTM is a combination of classical vertical shooters.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 4
    Monowars is an open source single/multiplayer, third-person perspective shooter located in a crystal world, with procedurally generated, fully destructible levels and highly customizable player characters and weapons.
    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
    This is a easy GUI Java Tool for advanced Quake 3 Players. User can create or edit Players. Run Quake with preselected Mod and Server. Config all Q3 settings via nice sorted GUI area.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 6
    Real-time flash multiplayer tank game. This project is mainly to help hone my skills in development and create re-usable actionscript. Using the ElectroServer as the back end. Modular as possible.
    Downloads: 0 This Week
    Last Update:
    See Project
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