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.

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  • 1
    Risk
    Risk has been renamed to Domination.
    Downloads: 6 This Week
    Last Update:
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  • 2
    Origami Editor 3D

    Origami Editor 3D

    Virtual paper folding program

    Origami Editor 3D is an advanced paper folding simulator. It uses a what-you-see-is-what-you-get interface and operates with a geometric abstraction of the Yoshizawa-Randlett system. Anything from a simple airplane to John Montroll's omega star can be folded in this editor. Origami files created with the program preserve the entire folding process, and they can be exported as folding diagrams in PDF, animated GIF files, or even as standalone Java programs displaying the origami in a 3D viewer when opened. The main purpose of this program is designing origami, but if you only want to learn how to make some origami figures, there is a set of built-in example files that can help you. Currently, there are 34 example figures available. Please note that this project was created for fun and still is a work in progress. The Discussion forum is open for anyone who wants to report a bug or suggest a new feature. User Guide: http://origamieditor3d.sourceforge.net/userguide/en/index.html
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    Downloads: 16 This Week
    Last Update:
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  • 3
    Earthdawn Character Editor

    Earthdawn Character Editor

    The ECE is for creation and managing ED3+ED4 characters.

    The Earthdawn Character Editor is a java-based utility to create and manage character for the role-playing game Earthdawn Third Edition and for the role-playing game Earthdawn Forth Edition. It is intend to be very flexible, so almost the full behaviour can be configured through xml-based config-files. Multi language support is possible.
    Downloads: 6 This Week
    Last Update:
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  • 4
    Mohist

    Mohist

    Minecraft Forge Hybrid server implementing the Spigot/Bukkit API

    MohistMC is dedicated to pushing boundaries by accomplishing the impossible through the creation of unique hybrid Minecraft software. Additionally, we strive to maintain and enhance select mods and plugins, aiming to provide players with an exceptional gaming experience.
    Downloads: 1 This Week
    Last Update:
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  • Train ML Models With SQL You Already Know Icon
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  • 5
    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: 1 This Week
    Last Update:
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  • 6
    Tweaked

    Tweaked

    Just another ComputerCraft fork

    Tweaked is a mod for Minecraft that adds programmable computers, turtles and more to the game. A fork of the much-beloved ComputerCraft, it continues its legacy with improved performance and stability, along with a wealth of new features. Tweaked can be installed from CurseForge or Modrinth. It runs on both Minecraft Forge and Fabric.
    Downloads: 1 This Week
    Last Update:
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  • 7
    Cyberpunk third-person 2100. noir RPG thriller using JMonkey. Its going to be mix between Bloodnet, Neuromancer, DeusEx in gameplay, with pieces of Uplink and many other mini-games for dealing with variety of tasks (lockpicking, hacking...)
    Downloads: 14 This Week
    Last Update:
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  • 8
    A J2ME MIDlet implementing a Portable Chess Board to run on a Java enabled Cell Phone. In order to download the binaries and/or the source files please follow the Files->MobileChessBoard link above.
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    Downloads: 25 This Week
    Last Update:
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  • 9
    18xx Rails Evolution
    🚂 WELCOME TO RAILS: THE ULTIMATE 18XX GAME ENGINE! 🚂 Are you ready to step into the shoes of 19th-century robber barons, manipulate stock markets, engineer ruthless hostile takeovers, and build the most lucrative railway empires in board gaming history? Rails is the premier, open-source Java engine dedicated entirely to the deep, tactical world of the 18xx operational and economic strategic series. Whether you are running local shortlines or launching massive continental networks, Rails automates the heavy lifting of banking and track laying so you can focus entirely on outsmarting your corporate rivals. ⚠️ PROJECT UPDATE & NEW HOME ⚠️ To support the ongoing modernization of the engine, the vibrant 18xx community, and the implementation of massive new structural improvements, our active development has permanently moved! 👉 GET THE LATEST VERSION 3.0.0 HERE: https://github.com/Rails-18xx/Rails/releases
    Downloads: 5 This Week
    Last Update:
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  • 10

    Europa Universalis Game Tools

    Europa Universalis 4 save game editor

    Java library and application to edit game files from all Clausewitz-engine games (EU3 and later, including EU4, Victoria 2, Hearts of Iron 3, EU: Rome, March of the Eagles, and Crusader Kings 2 and 3) and their saved games. Source code is now hosted at https://github.com/mmyers/eug. Sponsor on Patreon: https://www.patreon.com/user?u=60455822
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    Downloads: 24 This Week
    Last Update:
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  • 11
    JSettlers2 is a web-based version of the board game Settlers of Catan written in Java. This client-server system supports multiple simultaneous games between people and/or AI bots. Originally written by Robert S Thomas as an AI dissertation (http://sourceforge.net/projects/jsettlers). The active source code is hosted at https://github.com/jdmonin/JSettlers2 including full history; the sourceforge CVS is historical up to 2012-09-28.
    Downloads: 6 This Week
    Last Update:
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  • 12
    This project sourcecode move to http://code.google.com/p/jmugen/ (temporary because i have some problem with sourceforge) Mugen.Java or JMugen is 2D fighting game engine like Mugen
    Downloads: 29 This Week
    Last Update:
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  • 13
    !!! This project has been moved to https://github.com/Xenoage/Bolzplatz2006 !!! Our current project is called "Bolzplatz 2006" (English title "Slam Soccer 2006", French title "Coup de Fout 2006"). It's a freeware 3D-soccer-game in comic-style and a funny allusion to the World Cup 2006 in Germany.
    Downloads: 23 This Week
    Last Update:
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  • 14
    Objetivo de disseminar conhecimentos das diversas áreas de saber que envolvem o desenvolvimento de jogos independente de plataforma. The objective to spread diverse knowledge of areas to know that to involve the independent development of platform games
    Downloads: 23 This Week
    Last Update:
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  • 15
    JBoardGames
    Collections of simple Java Board Games No third party libraries. Now avaiable: - Chess 1.0.18 featuring Human vs Human Human vs Computer Computer vs Computer With puzzles. -Quattro 1.2.3 Currently available: Human vs Human Human vs Computer Computer vs Computer -Checkers 1.0.9 featuring Human vs Human Human vs Computer Computer vs Computer -Backgammon 1.0.2 featuring Human vs Human Human vs Computer Computer vs Computer - Go 1.0.1 Human vs Human Human vs Computer Computer vs Computer -Dominoes 1.0.1 featuring Human vs Human Human vs Computer Computer vs Computer - Mill 1.0.5 featuring Human vs Human Human vs Computer Computer vs Computer - Battleship 1.0.2 Human vs Computer
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    Downloads: 22 This Week
    Last Update:
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  • 16
    Downloads: 22 This Week
    Last Update:
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  • 17
    gdsplayer is a project for some university colleges to build a distributed application. Target is a nice online cardgame-server.
    Downloads: 22 This Week
    Last Update:
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  • 18
    Solaris Skunk Werks is a tool used to design Battlemechs for use with the Classic Battletech wargame. Data Files are available at www.solarisskunkwerks.com
    Downloads: 6 This Week
    Last Update:
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  • 19
    Tools for parsing and analyzing the JASS scripting language, which used for scripting Maps and AI files in Blizzard Entertainment's (R) Warcraft III (R).
    Downloads: 20 This Week
    Last Update:
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  • 20
    JCivED

    JCivED

    A toolbox for Sid Meier's Civilization

    JCivED aims to be the go-to tool for fans of Sid Meier's Civilization, to hack savegames, edit maps, create custom scenarios, mod/patch CIV.EXE, mod Civ PIC graphics... and more!
    Downloads: 20 This Week
    Last Update:
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  • 21
    LocoNet over TCP
    Client-server based software that talks to Digitrax LocoNet. TCP server talks through a hardware interface (e.g. LocoBuffer) to LocoNet. (User interface) clients talk to that server.
    Leader badge
    Downloads: 20 This Week
    Last Update:
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  • 22
    jGameBase - Universal Emulator Frontend
    jGameBase is a Java port of GameBase, a fully-featured retro-gaming emulator frontend and game database utility (e.g. GB64 Collection of C64 games). It supports virtually any emulator for any system and has versatile database searching and filtering. There are databases for Apple II, Atari ST, Coleco ColecoVision, Commodore Amiga, Commodore C64, Commodore VIC20, Nintendo NES, Nintendo SNES, and Sinclair ZXSpectrum.
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    Downloads: 20 This Week
    Last Update:
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  • 23

    Kendo Tournament Viewer

    Mobile viewer for Kendo Tournament Manager tool.

    This tool is an extension of the Kendo Tournament Manager tool. Allows the user to see some stats of the tournament using its own smartphone, getting access to the score, statistics and any other public information.
    Downloads: 11 This Week
    Last Update:
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  • 24
    Open Mahjong
    Implementation of the original Chinese board game of Mahjong using Hong Kong rules.
    Downloads: 11 This Week
    Last Update:
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  • 25
    SonOyuncu Makro 15+CPS

    SonOyuncu Makro 15+CPS

    Ücretsiz SonOyuncu macrosu, minimum 15CPS garantili.

    Bu program UfukGames tarafından yapılmıştır. Güvenli, hızlı ve az yer kaplar. SonOyuncu uygulamasının içine makro programımız konulmuştur. Oyun içinde eş zamanlı olarak açıp kapatabilirsiniz.
    Downloads: 11 This Week
    Last Update:
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