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

  • Auth0 for AI Agents now in GA Icon
    Auth0 for AI Agents now in GA

    Ready to implement AI with confidence (without sacrificing security)?

    Connect your AI agents to apps and data more securely, give users control over the actions AI agents can perform and the data they can access, and enable human confirmation for critical agent actions.
    Start building today
  • 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
  • 1
    FTLEditor

    FTLEditor

    A tool to edit profile and saved game files for FasterThanLight.

    A 3rd-party tool to edit user files for the game FasterThanLight. With this, you can unlock any or all ships and achievements in your user profile, or tweak most aspects of saved games: crew, systems, weapons, fires, breaches, etc.
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    Downloads: 134 This Week
    Last Update:
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  • 2
    Biogenesis
    Biogenesis is an artificial life program that simulates the processes involved in the evolution of organisms. It shows colored segment based organisms that mutate and evolve in a 2D environment. Biogenesis is based on Primordial Life.
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    Downloads: 48 This Week
    Last Update:
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  • 3
    VASSAL Engine
    VASSAL is a game engine for creating electronic versions of traditional board and card games. It provides support for game piece rendering and interaction, and supports play by email or over a live connection.
    Downloads: 22 This Week
    Last Update:
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  • 4
    Corewar is a game played vicariously through the action of assembly language programs written in a language called Redcode. Corewar is discussed in the Usenet group REC.GAMES.COREWAR; the reference implementation of this game, pMARS, is maintained here.
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    Downloads: 27 This Week
    Last Update:
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  • Nonprofit Budgeting Software Icon
    Nonprofit Budgeting Software

    Martus Solutions provides seamless budgeting, reporting, and forecasting tools that integrate with accounting systems for real-time financial insights

    Martus' collaborative and easy-to-use budgeting and reporting platform will save you hundreds of hours each year. It's designed to make the entire budgeting process easier and create unlimited financial transparency.
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  • 5
    Helping you rifle through other people's packages. The DBPF2 file format is used for most of the content in the Sims 3 engine. This project provides a Java-based API, and supporting GUI application, to unpack, browse, edit and repack these files.
    Downloads: 9 This Week
    Last Update:
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  • 6
    x3d

    x3d

    X3D is the open-standard format for 3D graphics scenes on the Web.

    Extensible 3D (X3D) Graphics is a royalty-free International Standard for real-time interactive 3D graphics on the Web, providing unsurpassed interoperability for 3D communications on the Web. This project includes source for example X3D scene libraries and multiple X3D codebases produced by Web3D Consortium members. All open-source contributions are welcome.
    Downloads: 5 This Week
    Last Update:
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  • 7
    XHSI - glass cockpit for X-Plane 10 & 11
    XHSI (eXternal High-resolution Simulator Instruments) is an add-on for the X-Plane flight simulator. It displays the PFD, ND, EICAS, Flaps and Gear indicator, Clock/Chronometer, etc... in separate windows. In general, the instruments can be displayed in B737-NG or A320 style.
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    Downloads: 14 This Week
    Last Update:
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  • 8
    Tyrant is a graphical roguelike fantasy adventure game. It features intricate randomly generated landscapes, towns and dungeons. It is written in Java with a highly extensible game engine.
    Downloads: 4 This Week
    Last Update:
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  • 9
    Magic:The Gathering over LAN or Internet, alone or against another player (need IP of your opponent). The program is the judge : you play with the true rules. Firemox can also emulate another TBS. Written in Java, works on Mac, Windows and Linux.
    Downloads: 4 This Week
    Last Update:
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  • Free and Open Source HR Software Icon
    Free and Open Source HR Software

    OrangeHRM provides a world-class HRIS experience and offers everything you and your team need to be that HR hero you know that you are.

    Give your HR team the tools they need to streamline administrative tasks, support employees, and make informed decisions with the OrangeHRM free and open source HR software.
    Learn More
  • 10
    Kelpie Flight Planner for Flightgear
    The Kelpie Flight Planner for Flightgear. This Java based Gui flight planner uses the airport and navaid databases of the Flightgear, allowing the user to search for airports and navigation aids and plan flights between them. [Note: Requires Java 1.10 or above] This program is no longer being actively developed or supported. All future work is being undertaken on a port to Rust/Gtk at https://github.com/shartrec/kelpie-flight-planner. But is still in the very early stages.
    Downloads: 2 This Week
    Last Update:
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  • 11
    ATCJ: Air Traffic Controller Game, let you direct flights into and out of the flight arena and airports, written in Java, small and portable, based on the classical UNIX terminal based Air Traffic Controller Game (atc) created by Ed James.
    Downloads: 3 This Week
    Last Update:
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  • 12
    PolyJen: Polymerization in a digital laboratory
    Downloads: 5 This Week
    Last Update:
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  • 13
    Solarex - Travel and Explore the Galaxy
    Solarex is a space traveling, trading and prospecting game built upon a stellar system generator. There is a galaxy full of stellar systems with all sorts of treasures to explore - so enter your spaceship, buy some fuel and head off!
    Downloads: 4 This Week
    Last Update:
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  • 14

    Biogenesis Color Mod

    Mod for evolution simulation and artificial life program Biogenesis

    You can download the Color Mod at the Biogenesis main site too (included in the main download now). You also find the sourcecode there. If you want to post a review, remember that this is only a modification, so comment on my changes, not on the simulation. Original project by Joan Queralt Molina: https://sourceforge.net/projects/biogenesis/ Includes Tyler Colemans "Features Mod": https://sourceforge.net/projects/biogenesisfeatu/ Biogenesis discussion forum: https://sourceforge.net/p/biogenesis/discussion/ Biogenesis runs faster (at least for myself) if you open a Google Chrome window (don´t know why :D)
    Downloads: 2 This Week
    Last Update:
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  • 15
    Jagent
    Jagent is a suite for manipulating Creatures 3 and Docking Station agents. It consists of a sprite tool (Edos) and a PRAY tool (Monk). It requires Java (http://java.com/)
    Downloads: 3 This Week
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  • 16
    LOOP (Language Object Oriented Parallel) is a visual programming language project dedicated to creating a full suite of components for simulation of hierarchical dynamical systems in discrete time.
    Downloads: 3 This Week
    Last Update:
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  • 17
    JAS is a java library for creating agent based simulations. It features a discrete-event time engine, APIs for network simulation design, powerful yet easy-to-use implementations of Genetic Algorithms and Neural Networks.
    Downloads: 2 This Week
    Last Update:
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  • 18
    JManagementGames

    JManagementGames

    Collection of simple Java Mangement Games

    Collection of simple Java Mangement Games Currently available: Restaurant 1.1.0 Transport Company 1.0.6 Chauffeur 1.1.0 Farm 1.0.4 City 1.0.1 Supermarket 1.0.0 Mall 1.0.0 Airport 1.0.1 Rail Company 1.0.0
    Downloads: 2 This Week
    Last Update:
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  • 19
    MorseLab
    Java-based free software for learning audio and flashing-light Morse code. Features include very flexible audio system, drills based on live news feeds, and adaptive drilling strategies.
    Downloads: 2 This Week
    Last Update:
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  • 20
    GaugeBook
    GaugeBook displays Gauges of your FSX (with SP2 or Acceleration) and gives you control over a lot of Settings. Change Frequencies, QNH, etc with a few mouse clicks. It's still beta but the new G1000 is a blast. Runs smooth on any notebook.
    Downloads: 1 This Week
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  • 21
    Simulation Laboratory
    Simulation Laboratory (SimuLab) is a free combat flight simulation designed with the maximum degree of modularity and customize-ability in mind.
    Downloads: 1 This Week
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  • 22
    Worldlines
    Worldlines visualizes special relativity, as particles near lightspeed trace paths in a 3D slice of 4D Minkowski spacetime. Scenes illustrate time dilation, the twin paradox, length contraction, and Bell's spaceship paradox.
    Downloads: 1 This Week
    Last Update:
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  • 23
    tXtFL is a strategy-based football simulator. Teams can be created from real stats on the web, built through custom designed plays, and then used to coach games or predict scores. Note that as of 2010, all new development is taking place at http://textflex.com/txtfl.
    Downloads: 1 This Week
    Last Update:
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  • 24
    This program allows user to test the roads to be constructed, on a three dimensional simulation environment.
    Downloads: 1 This Week
    Last Update:
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  • 25
    A Java game based off the version on YoYoGames.com: http://gmc.yoyogames.com/index.php?showtopic=279075 The only controls are the arrow keys: Left and Right to steer, Up key to go faster.
    Downloads: 1 This Week
    Last Update:
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