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
    Goobiq - Project Being ReVamped
    Downloads: 0 This Week
    Last Update:
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  • 2
    GothWaG (Gothic WarGame) is a turn-based war game written in Java usable on the net. It will support: different races, armies, infantries, cavalries, monsters, warmachines and a good artificial intelligence for single match.
    Downloads: 0 This Week
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  • 3
    Grabble is an Anagrams-playing Java applet. In this fast-paced game,everyone plays at the same time to make words using tiles from a popular boardgame. It supports computer & unlimited human players in hotseat. One can customise the tileset,word list etc.
    Downloads: 0 This Week
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  • 4
    A MMO Version of a graphical NetHack. This game has 2 parts: A Server written in Java and a Client written in DarkBASIC.
    Downloads: 0 This Week
    Last Update:
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  • 5
    GMUDsys is a system for creating graphical MUDs. The initial game created with it will have a sci-fi theme with a variety of environments and activities.
    Downloads: 0 This Week
    Last Update:
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  • 6
    GMUVE (Graphical Multiuser Virtual Environment) is an engine/framework that lets large numbers of users interact in a 3D world. GMUVE is a peer to peer networked OpenGL application that can be used for MMPOG or 3D chat. It is available in Python and JAVA
    Downloads: 0 This Week
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  • 7
    Jeu d'aventure sous Android.
    Downloads: 0 This Week
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  • 8
    Graveyard Invasion

    Graveyard Invasion

    Wave based game written in Java

    Graveyard Invasion is a wave based pixelstyle game. The goal of the game is it, to survive as long as you can against evil spiders and bats. A lot of powerups will help you.
    Downloads: 0 This Week
    Last Update:
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  • 9
    Gravity Simulator

    Gravity Simulator

    Multithreaded N-Point Gravity Simulation for PC and Android

    Create a sun, spin some asteroids around it, and watch them collide and form planets. An N-Point Gravity Simulator is a realistic simulation in which all points attract each other: even the smallest asteroid has its own gravitational field that can affect even a large sun far away from it. Can be reused as a library for making games. If used as library, license is GNU LGPLv3, otherwise it's GNU GPLv3.
    Downloads: 0 This Week
    Last Update:
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  • 10
    Great Malls of Fire is a crowd simulation in a shopping center-like environment. Build your mall, look at your customers shopping... Then set it on fire and then watch them run away in fear!
    Downloads: 0 This Week
    Last Update:
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  • 11
    Greensweeper

    Greensweeper

    This megacity needs green areas!

    An environmental approach to the classic Minesweeper game. Walk through public parks. Avoid condos, they can potentially spoil your ride.
    Downloads: 0 This Week
    Last Update:
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  • 12
    GriFFin, Really, Is For Files In Neverwinter nights (a.k.a GFF files). The project aims at providing a Java based API for manipulating GFF files used in Neverwinter Nights (tm) outside the game itself, eventually maybe in a web based application to make this possible from remote.
    Downloads: 0 This Week
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  • 13
    GriefPrevention

    GriefPrevention

    The official self-service anti-griefing Bukkit plugin for Minecraft

    GriefPrevention is a long-running anti-griefing plugin for Minecraft servers built around self-service land protection. It helps prevent damage, theft, unwanted building, and other griefing behavior before server staff have to respond manually. Players can protect their own builds with minimal administrator involvement, which makes it useful for public survival servers with many users. The project targets current Spigot, Paper, and Purpur servers, while older versions remain available separately for legacy Minecraft environments. It also has an addon ecosystem for extending protection behavior beyond the core plugin. GriefPrevention is best suited for server owners who want practical build protection, fewer moderation emergencies, and a player-friendly claiming system.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 14
    Grimoire is a project aimed at providing a set of tools for players of the game "Magic: The Gathering". The tools will help players to manager their cards and decks.
    Downloads: 0 This Week
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  • 15
    Grinder is a free WoW (World of Warcraft) ingame bot. Classes implemented at the moment Rogue/Warlock, other classes coming soon. At the moment Grinder is only available for german version, other version coming soon.
    Downloads: 0 This Week
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  • 16
    Groovy Dice is an open source dice rolling engine written entirely in Groovy that provides a simple way to specify and evaluate complex dice rolling expressions.
    Downloads: 0 This Week
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  • 17
    GrotteRaider is a small 2D video game written in Java. Gameplay presentation video: http://www.youtube.com/watch?v=e9O3BfUpXQU
    Downloads: 0 This Week
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  • 18
    A Java framework for networked group experiments using WebWork, Spring, Hibernate, Swing, Java NIO. See http://groups.psych.indiana.edu for more information. Similar development efforts are continuing at the Virtual Commons - http://commons.asu.edu
    Downloads: 0 This Week
    Last Update:
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  • 19
    A cross platform chess database which supports ChessGML, PGN, SVG, PostgreSQL and plugins written in Java or Jython. Some Python chess libraries and some Python tools are included. Usable pieces are Java and Python opening classification libraries.
    Downloads: 0 This Week
    Last Update:
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  • 20
    Guild Kit is a J2EE-based toolkit for building World of Warcraft (TM) (WoW) guild forums with additional functionality like skinning, armoury lookup support, extensive right model, DKP tracking and raid statistics.
    Downloads: 0 This Week
    Last Update:
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  • 21
    The Guild Wars Converter allows you to convert Player or Team Builds from .gtb to gwBBCode or from gwBBCode to .gtb. Additionaly you can edit each characters attributes, names and descriptions.
    Downloads: 0 This Week
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  • 22
    GuildWare is an all in one guild hosting package. It features a forum, DKP management system and a raid management system. The user interface is entirely webbased. The software it self is written entirely in Java and thus can be run on any OS that suppor
    Downloads: 0 This Week
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  • 23
    Guilds Plugin

    Guilds Plugin

    Let there be guilds

    This a plugin that adds guilds to your bukkit server
    Downloads: 0 This Week
    Last Update:
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  • 24
    Gummy-Tac-Toe Free

    Gummy-Tac-Toe Free

    Tic-tac-toe with gummy bears

    Classic Tic-Tac-Toe, except with gummy bears, free! Play classic tic-tac-toe using gummy bears instead of the old and boring X's and O's. Gummy-Tac-Toe Free is awesome and free! You can also get the paid version for 2-player!
    Downloads: 0 This Week
    Last Update:
    See Project
  • 25
    Gumpire is designed to be used as an educational aid in a programming class. It will allow students to program game clients that can participate in a competition without needing to write a complicated interface to a server.
    Downloads: 0 This Week
    Last Update:
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