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
    MulgEd - The Mulg game and level editor
    Downloads: 3 This Week
    Last Update:
    See Project
  • 2
    NetAnt is a Java-based game, using ideas from a popular online website where people build ant colonies and have them fight each others. The progarm is a server which people telnet to, but GUI clients can be made easily.
    Downloads: 3 This Week
    Last Update:
    See Project
  • 3
    OAS is an application server for building online, cross-platform, multiplayer/user game applications and provides developers with a framework for handling client/server communication, handling and executing application logic, and multiple client types.
    Downloads: 3 This Week
    Last Update:
    See Project
  • 4
    Orient is the prototype for an educational role-playing game for intercultural education. It originates from the EU funded research project eCircus. The software uses tangible user interfaces and innovative psychology inspired character AI.
    Downloads: 3 This Week
    Last Update:
    See Project
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  • 5

    OpenQuest

    OpenQuest is a computer game conversion of the board game HeroQuest.

    OpenQuest is a computer game conversion of the board game HeroQuest. The play supports Multiplayer as well as Singleplayer. The representation takes place in a isometric view (like e.g. Transport Tycoon, UFO - Enemy Unknown, etc.).
    Downloads: 3 This Week
    Last Update:
    See Project
  • 6
    OpenRebellion

    OpenRebellion

    Open source game inspired by Star Wars Rebellion. Code written in Java

    Open source development of a strategy real time/turn base game based on Star Wars Rebellion game. Like us on Facebook to stay informed of any update: https://www.facebook.com/OpenRebellionGame
    Downloads: 3 This Week
    Last Update:
    See Project
  • 7
    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: 3 This Week
    Last Update:
    See Project
  • 8

    Paddle Storm

    A ball-and-paddle style game

    A new ball-and-paddle style game, with a spellcasting system, arbitrary angles, and achievements.
    Downloads: 3 This Week
    Last Update:
    See Project
  • 9

    Pi-Space Physics Software

    A Physics Theory for Unifying Classical, Quantum and Relativistic Phys

    This is the Official Software of the Pi-Space Physics Theory created by Martin Brady. I have a B.Sc. in Computer Applications from Dublin City University and I have an interest in software implementation of Physics. The Theory includes a Quantum Theory of Gravity as well as a reworking of Classical versions of Newton's Formulas. The Theory is based on a set of Relativistic Diagrams called Pi-Space Diagrams for those new to the Theory. License :: Creative Commons Attribution License :: Creative Commons Attribution Non-Commercial License V2.0
    Downloads: 3 This Week
    Last Update:
    See Project
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  • 10
    Punish

    Punish

    A card game similar to Crazy Eights

    Download the zip, and extract it to a folder. Run the JAR file to play the game. Make sure you have Java 8 installed on your system. You can download java from: www.java.com Rules: Play against the computer in this exciting game. Each player gets dealt 7 cards, and they take turns to get rid of the cards in their hands as quickly as possible. The first player to do so is the winner. While discarding cards, the player must match the suit or the number of the card currently at the top of the discard pile. Alternately, the player can play a Jack of any color to change the suit to one he desires. If an Ace is played, it must be followed by another card matching the suit of the Ace or another ace, failing which he must draw a card, but not if the Ace was the last card in his hand. Playing an Eight results in all other players drawing one card from the draw pile. If the player does not have a suitable card to play, nor an Ace/Jack/Eight, he must draw a card.
    Downloads: 3 This Week
    Last Update:
    See Project
  • 11

    RPG Dice Simulator

    RPGDS is a dice simulator for coin and polyhedron dice.

    The RPG Dice Simulator (RPGDS) is a tiny java application that simulates all common RPG dice. These are D2 (two-sided LaPlace coin) D4 (tetrahedron, four sides) D6 (hexahedron, six sides, normal game die) D8 (octahedron, eight sides) D12 (dodecahedron, twelve sides) D20 (icosahedron, twenty sides) The project is separated into two parts: aRPGDS and jRPGDS. aRPGDS is the Android repository and package jRPGDS is the Java/AWT repository and package
    Downloads: 3 This Week
    Last Update:
    See Project
  • 12

    RPG ToolBox

    Library for helping developing PnP RPG tools

    The objective of this project is the creation of a library to help developing tools for PnP RPGs.
    Downloads: 3 This Week
    Last Update:
    See Project
  • 13
    RealTimeBattle is a programming game, in which robots controlled by programs are fighting each other. The goal is to destroy the enemies, using the radar to examine the environment and the cannon to shoot.
    Downloads: 3 This Week
    Last Update:
    See Project
  • 14
    Rescue! Max
    A 2D space real-time, action/strategy game. you are in control of a ship that you fly around space fighting enemies and making friends on your way. The main objective is to rescue people from planets and take them to star bases. its writen in java1.4.
    Downloads: 3 This Week
    Last Update:
    See Project
  • 15
    This is RoboCup player. The player can be used with soccer server system (http://sserver.sourceforge.net). It can be used as a library for your custom player or can be programmed with build-in scripting language (very simple).
    Downloads: 3 This Week
    Last Update:
    See Project
  • 16
    SARGE - Search And Rescue Game Environment is a multi-player training game for robot operators which also supports agent based robot control for simulation work via TCP.
    Downloads: 3 This Week
    Last Update:
    See Project
  • 17
    SC4TSCT
    This tool is for SimCity 4 to configure the NAM Unified Traffic Simulator.
    Downloads: 3 This Week
    Last Update:
    See Project
  • 18
    Outil de gestion de partie de jeu de rôle sur table avec gestion des personnages, des règles de jeu et visualisation des scènes de jeu (vue de haut). Actuellement basé sur le jeu "Seigneur des Anneaux" de Decipher et en français uniquement.
    Downloads: 3 This Week
    Last Update:
    See Project
  • 19
    Ein Shadowrun 4-Charaktergenerator
    Downloads: 3 This Week
    Last Update:
    See Project
  • 20

    Simple Multiuser Online Scenes

    X3D Prototypes for the SMUOS Component

    Develop X3D prototypes to ease the use of the X3D network sensor for simple multiuser online scenes
    Downloads: 3 This Week
    Last Update:
    See Project
  • 21
    J2ME Sokoban Clone for mobile devices.
    Downloads: 3 This Week
    Last Update:
    See Project
  • 22

    Sporz

    Sporz game for Android - jeu Sporz pour Android

    La Terre a été ravagée par une terrible épidémie. Vous faites partie de la poignée de survivants qui s'enfuit à bord d'un vaisseau spatial pour reconstruire l'humanité sur une nouvelle planète. Mais soudain c'est l'alerte, les analyses sont formelles : quelqu'un à bord est contaminé, c'est un mutant. Sporz est une enquête grandeur nature très rapide à mettre en place. Les joueurs coopèrent pour trouver qui sont les mutants. Attention cependant : chacun est susceptible de changer secrètement de camp et de trahir ses anciens coéquipiers. Joueur débutant ou chevronné, peu importe. La victoire de l'équipage passe avant tout par la communication, la confiance et une bonne dose de bluff !
    Downloads: 3 This Week
    Last Update:
    See Project
  • 23
    Star Fight

    Star Fight

    Fly through space and avoid hitting the aliens that fly towards you!

    V 3.0 out now! Changes: 8 new rockets to fly! All based on real life rockets. Game should now run smoother. Fly through space and avoid hitting the aliens that fly towards you! Collect points by avoiding them and set new records. Please report bugs or suggestions to @banansplitt_ on twitter.
    Downloads: 3 This Week
    Last Update:
    See Project
  • 24
    Steam Grabber

    Steam Grabber

    A multiplatform Steam screenshot mass-downloader

    Steam Grabber is an application that lets you download all your screenshots from Steam to your hard drive. Ideal for users that have changed their PCs or have suffered hard drive crashes, this tool will get their entire Steam Screenshot Collection to their HDs in no time.
    Downloads: 3 This Week
    Last Update:
    See Project
  • 25
    Sudoku Mania! A fully customizable sudoku game written in java. Create your own themes using Xml. 6 squares, 8 , 9, 16? No problem. Show numbers, letters, or even pictures. Print Sudokus to go and much more. Available for Cell Phones and PDA's too.
    Downloads: 3 This Week
    Last Update:
    See Project