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

    Gametable

    Multi-user whiteboard emphasizing simplicity.

    Gametable (also known as GamenianTabele), is a Java-based shared whiteboard and chat client. It is designed primarily to provide an online tabletop interface. Draw directly, or place images, that all connected users can see and manipulate. RNG/dice functions supported, infinite table size, a few Z-order layers, pointer tools visible to everyone connected, stand along host server, and basic tagging and drawing tools. It specializes in simplicity, virtually no learning curve, and ease of use. Shared image files auto-propagate to other users (and only images, no other file type will propagate), which allow them to use a local cache to view shared spaces.
    Downloads: 10 This Week
    Last Update:
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  • 2
    Mediocre is a Java-based chess engine, implementing features like LMR, SEE, history and killer moves heuristics, transposition tables, internal iterative deepening, PVS search etc.
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    Downloads: 12 This Week
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  • 3
    XiangQi Wizard (Chinese Chess Wizard) is a powerful XiangQi (chinese chess) program, which supports UCCI engines. XQWizard Light is the Mobile version for Windows CE and Java ME. ElephantEye is the UCCI engine in XQWizard with strong AI.
    Downloads: 24 This Week
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  • 4
    mod_MumbleLink

    mod_MumbleLink

    Positional Audio Communication for Minecraft with Mumble

    A Mod so that Minecraft now natively supports Mumble's positional audio feature. This means: Directional and positionally attenuated VOIP in relation to the game world. Please visit the Forum for information about the newest Version! Main Forum-Thread: http://www.minecraftforum.net/forums/mapping-and-modding/minecraft-mods/1272675 TheSkorm's Fork on GitHub: https://github.com/TheSkorm/mod_mumblelink Mumble: http://mumble.sourceforge.net Donations are greatly appreciated: https://sourceforge.net/donate/?user_id=2370023
    Downloads: 13 This Week
    Last Update:
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  • 5
    AndEngine

    AndEngine

    Free Android 2D OpenGL Game Engine

    AndEngine is a Java-based, open-source 2D game engine for Android, designed to make mobile game development easier by wrapping OpenGL (GLES) under a higher-level API. It abstracts much of the complexity of directly using OpenGL, letting developers more quickly build games with sprites, tilemaps, physics (via extensions), animations, and input handling, all within the Android ecosystem. Because it's tailored for Android, AndEngine integrates with typical Android project structure and lifecycle, although historically it was more aligned with Eclipse — meaning some adaptation might be needed for modern Android Studio projects. It enjoys a substantial community, many forks and extensions (for physics, tilemaps, multiplayer, live wallpapers, etc.), which increases its versatility — from simple casual games to more feature-rich 2D titles.
    Downloads: 2 This Week
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  • 6
    BungeeCord

    BungeeCord

    BungeeCord, the 6th in a generation of server portal suites

    BungeeCord is a Minecraft server proxy designed to connect multiple Minecraft servers into one larger network. It lets players move between separate servers while experiencing them as part of the same connected environment. The project is maintained by SpigotMC and has long been used by server owners who operate lobby, minigame, survival, creative, and specialized game-mode networks. BungeeCord works as a layer between players and backend servers, forwarding connections and managing server-to-server transitions. It also provides an API that developers can use to create plugins and extend proxy behavior. Its main value is helping Minecraft communities scale beyond a single server while keeping navigation smoother for players.
    Downloads: 2 This Week
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  • 7
    Grimmory

    Grimmory

    Grimmory is the successor of booklore

    Grimmory is a self-hosted digital library management platform designed to help users organize, read, and manage their entire book collection in a centralized and fully controlled environment. As the successor to Booklore, it expands on the idea of personal knowledge ownership by allowing users to store and interact with books without relying on third-party cloud services. The platform supports a wide range of formats, including eBooks, PDFs, comics, and audiobooks, making it versatile for different types of media consumption. It includes a built-in browser-based reader that allows users to read, annotate, and track progress directly within the application. Grimmory also emphasizes automation through features like metadata enrichment and automatic file ingestion, reducing manual effort when managing large collections. Multi-user support enables separate libraries, preferences, and reading progress for different users within the same instance.
    Downloads: 2 This Week
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  • 8
    Nukkit

    Nukkit

    Nuclear-Powered Minecraft: Bedrock Edition Server Software

    Nukkit is nuclear-powered server software for Minecraft: Pocket Edition. It has a few key advantages over other server software.
    Downloads: 2 This Week
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  • 9
    Project Malmo

    Project Malmo

    A platform for Artificial Intelligence experimentation on Minecraft

    How can we develop artificial intelligence that learns to make sense of complex environments? That learns from others, including humans, how to interact with the world? That learns transferable skills throughout its existence, and applies them to solve new, challenging problems? Project Malmo sets out to address these core research challenges, addressing them by integrating (deep) reinforcement learning, cognitive science, and many ideas from artificial intelligence. The Malmo platform is a sophisticated AI experimentation platform built on top of Minecraft, and designed to support fundamental research in artificial intelligence. The Project Malmo platform consists of a mod for the Java version, and code that helps artificial intelligence agents sense and act within the Minecraft environment. The two components can run on Windows, Linux, or Mac OS, and researchers can program their agents in any programming language they’re comfortable with.
    Downloads: 2 This Week
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  • 10
    A Java-based Commodore 64 emulator for mobile devices and PCs. If you want to see the old C64 become alive on your mobile phone or PC then try this emulator. For more information see the Wiki pages http://sourceforge.net/apps/mediawiki/jmec64/index.php.
    Downloads: 13 This Week
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  • 11
    MekHQ is a java helper program for the MegaMek game that allows users to load a list of entities from an XML file, perform repairs and customizations, and then save the new entities to another XML file that can be loaded into MegaMek.
    Downloads: 10 This Week
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  • 12
    Android Game Engine

    Android Game Engine

    Multi-threaded game engine for Android

    AGE is a multi-threaded game engine for Android with OpenGL ES2 shader-based rendering. In-depth GL knowledge isn't necessary to start; use the OBJ loader to import models from Blender and elsewhere, attach textures, and start rendering! Threads run different activities, e.g. initialization, framerate, timer, game cycle. Apartment model with message passing. The drawing cycle is inverted from typical game loops. Framerate has a dedicated timer, and SurfaceView is in on-demand rendering mode. Game Objects (GOs) opt-in to services by implementing the "marker" interface for each one it wants. GOs enter the system via Install Pipeline, an asynchronous "standard" implementation that keys on the marker interfaces and performs the "protocol" for that marker. There are also Event and Uninstall pipelines. Reference by name is encouraged. A trip through the pipeline includes a Bind Name List; allows GO to connect to interfaces in other GOs on the other End.
    Downloads: 51 This Week
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  • 13
    BagaturChess

    BagaturChess

    Java Chess Engine

    This is UCI Chess Engine writen in Java. Since version 1.4 (inclusive) the project was moved to https://github.com/bagaturchess/Bagatur
    Downloads: 27 This Week
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  • 14
    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.
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    Downloads: 48 This Week
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  • 15
    JDiveLog
    JDiveLog is a logbook for scuba diving written in Java. It manages all important dive data, as well as the pictures taken during the dive. Features include import of UDCF data, data from Suunto/Uwatec computers, profile generation, web page generator.
    Downloads: 12 This Week
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  • 16
    tournament

    tournament

    Gestion de tournoi / Tournament management

    Tournament est une gestion de tournois écrit en java/SWT. Le but est de proposer une interface simple de gestion de poules et/ou d'éliminations. Tournament is a tournament management written in Java / SWT. The aim is to provide a simple interface for managing round robins and / or eliminations. Installation/Install https://sourceforge.net/p/swttournament/installation/Installation/ Si un graphiste passe sur cette page, un petit coup de main pour mon splash screen. Merci !! need help for translation: submit your translation !!! https://sourceforge.net/projects/swttournament/files/translations/
    Downloads: 16 This Week
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  • 17
    2D isometric MMORPG using the SDL framework. Daimonin offers a free public server at https://www.daimonin.org . A Unity client is also in active development.
    Downloads: 8 This Week
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  • 18
    Find releases and source code repositories from Files and Git.
    Downloads: 44 This Week
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  • 19
    Peces (Joc de Tangram)
    Peces és un programa per jugar a 40 modalitats de tangram y més de 31.000 figures per resoldre. Podeu crear noves figures, generar-les automàticament, crear concursos i intercanviar les dades amb altres usuaris. A tangram's program with 40 modalites of tangram and more 31,000 shapes. You can create new figures and add them to the main game. In addition, it is possible to create competitions against your friends, and select only the shapes you want to use. Programme pour jouer avec 40 variétés de tangram et plus de 31.000 figures. Gioco di 40 modalità de tangram e più 31.000 Die Freeware Peces ist ein sehr umfangreiches Tangram Puzzle Spiel für Mac OSX mit vielen unterschiedlichen Formen und 4 Schwierigkeitsstufen. Die in einzelne Teile zerlegten Formen müssen dabei wieder richtig zusammengefügt werden.
    Downloads: 9 This Week
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  • 20
    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: 24 This Week
    Last Update:
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  • 21
    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: 43 This Week
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  • 22
    A -quite ambitious- project to create a functional Doom source port in pure Java, trying to keep as close as possible to the original source code while at the same time streamlining it into a more OO and Java-friendly form.
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    Downloads: 23 This Week
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  • 23
    Free Mars

    Free Mars

    Turn based free strategy game about colonizing Mars.

    It is the year 2077, for the first time in its history mankind has finally began the colonization of another planet. Will the pioneers from Earth succeed in colonizing their new home or will they fail to survive against the harsh and inhospitable conditions of the Red planet? Free Mars is a turn based strategy game about colonizing Mars.
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    Downloads: 8 This Week
    Last Update:
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  • 24
    Minecraft (Linux)

    Minecraft (Linux)

    Minecraft launcher

    Downloads: 41 This Week
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  • 25
    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: 14 This Week
    Last Update:
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