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

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  • 1
    TripleA Maps

    TripleA Maps

    A collection of all maps and games made for the TripleA game engine

    http://www.triplea-game.org/
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    Downloads: 343 This Week
    Last Update:
    See Project
  • 2
    Crossfire RPG game

    Crossfire RPG game

    Cooperative multiplayer graphical RPG and adventure game

    Crossfire is a free, open-source, cooperative multi-player RPG and adventure game. Since its initial release, Crossfire has grown to encompass over 150 monsters, 3000 areas to explore, an elaborate magic system, 14 races, 16 character classes, and many powerful artifacts scattered far and wide. Set in a fantastical medieval world, it blends the style of Gauntlet, NetHack, Moria, and Angband.
    Downloads: 35 This Week
    Last Update:
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  • 3
    Colossus is a Java clone of the boardgame Titan, a turn-based fantasy wargame for 2-6 players. Each player moves stacks of creatures around a strategic board, recruiting more creatures and fighting enemy stacks on tactical maps.
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    Downloads: 20 This Week
    Last Update:
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  • 4
    MegaMek
    MegaMek is a networked Java clone of BattleTech, a turn-based sci-fi boardgame for 2+ players. Fight using giant robots, tanks, and/or infantry on a hex-based map. Development currently occurs on GitHub (see https://github.com/MegaMek). This SF page remains as a mirror and archive of the old issue trackers. The trackers are currently locked and new issues should be created on the GitHub page.
    Downloads: 8 This Week
    Last Update:
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  • 5
    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: 6 This Week
    Last Update:
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  • 6
    Risk
    Risk has been renamed to Domination.
    Downloads: 5 This Week
    Last Update:
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  • 7

    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: 3 This Week
    Last Update:
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  • 8

    Thermos

    MinecraftForge Server Software implementing the Spigot/Bukkit API

    Minecraft Forge Server Software implementing the Spigot/Bukkit API, formerly known as Cauldron/MCPC.
    Downloads: 17 This Week
    Last Update:
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  • 9
    The fortbattle player replays a fortbattle of the browser game "The West" (http://www.the-west.net). It displays the battle like the ingame flash player, but you can control the speed, skip rounds and see some statistics. Ingame use req. GreaseMonk
    Downloads: 5 This Week
    Last Update:
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  • 10
    Shoddy Battle (later known as Pokémon Lab) is a Pokémon simulator created by Cathy and bearzly and first released in July 2007. It allows users to play Pokémon matches against other people online. Shoddy Battle was highly influential on the game of competitive Pokémon because it was free and open source, scalable (700,000 battles per month during its peak), user customisable and extensible, and it provided unprecedented statistical data on player skill and Pokémon usage trends. Visit the web site for more information.
    Downloads: 5 This Week
    Last Update:
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  • 11
    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: 1 This Week
    Last Update:
    See Project
  • 12
    Chess

    Chess

    A simple 2D-Chess

    A 2D-Chess with many features, such as a multiplayer server and many others. It will also show you all movement possibilites you have. Playing against Computer is in development
    Downloads: 4 This Week
    Last Update:
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  • 13
    Minecraft Name Checker

    Minecraft Name Checker

    Minecraft Name Availability Checker

    A Minecraft tool that checks to see if an account name is available or currently taken. The program is written entirely in Java and exported to an executable. A text file (one name per line) can also be read and checked. An output file "available.txt" will be created with usable names in the same directory as the selected read file.
    Downloads: 3 This Week
    Last Update:
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  • 14
    Pinewood Derby Race Track 2

    Pinewood Derby Race Track 2

    Pinewood Derby Race Management

    Race Track is a Pinewood Derby Race Management Application. This is Cub Scout Pinewood Derby Timer Gate software . This is a rewrite by Steve Powell to the original Race Track Written by Scott Lewis in sourceforge. It supports racer registration, heat scheduling, electronic timer integration, and sound effect playback. It is written in Java and runs on any Java enabled platform. It is written to support either Arduino, Micro Wizard or The Judge Electronic Gates. It also supports Race Results screen, Multiple COM ports and manually entered race times. A start sensor may be used as well.
    Downloads: 1 This Week
    Last Update:
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  • 15
    CS:GO Multi Script

    CS:GO Multi Script

    Multi scripts for CS:GO that do just about everything

    I have not posted any of the code yet, I'm working on it locally then will push everything. This is not to be used in game (maybe deathmatch only :stuck_out_tongue:), but rather is meant to have some with the features that Java provides. I included all source so that you can see what I used. This is a great project to learn about global event listener, JRobot, JavaFX, etc... Most of the people said this just makes it harder to play the game, so it's not fantastic. The only thing I would say is worth getting banned over is the "camping" trigger bot and the crosshair overlay. The other features don't really provide an unfair advantage in my opinion. Either way, enjoy :)
    Downloads: 2 This Week
    Last Update:
    See Project
  • 16
    LandsDiscordBot

    LandsDiscordBot

    Adds Discord Functionality to Lands.

    This plugin adds Discord functionality to the spigot plugin Lands. It allows land owners to create a channel for their land so they can chat from Discord with their land members online at the Minecraft server. Also you can view top lands in Discord, receive land and war notifications and more to come.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 17
    MechFight
    MechFight is a new implementation of the Amigagame Mechforce. In this tactical game groups of warriors fight with heavy machines (up to 100 tons), until defeat or even death in a thermonuclear explosion of their engines.
    Downloads: 2 This Week
    Last Update:
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  • 18
    An alternative/custom Minecraft server, written in Java, compatible with the original protocol. OpenCraft is built upon Apache MINA, SLF4J, Jython and XStream. The aim is to have features not in the official server distribution, like antigrief/scripting.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 19
    Develop an experimental framework for simulated multiplayer (model) railroads. It could be based on the VRML/X3D standard and it could use internal scripting with ECMAScript and MU systems that provide network sensor interfaces. Project Homepage: http://simulrr.sourceforge.net The SRR Framework has been used by the SrrTrains v0.01 project Demo 2012: https://www.youtube.com/watch?v=bHBwXmMfF1c Home of SrrTrains: https://lc-soc-lc.at/host
    Downloads: 1 This Week
    Last Update:
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  • 20
    This is new reincarnation of all-known xNova project. In the "Regenesis" we want to summarize all best from space-MMRPGs such like Unificant Wars and OGame. All development is carried out with Java (Hibernate + J2EE) + Haxe + ExtJS.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 21
    BlackJack-like game where you play against another player, either online or on a LAN, where the best hand wins the round. It's still developing, the new round doesn't work as it was supposed to... and many new features that will come as I improve it.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 22
    Single or multiplayer strategy game centered around evolution. Cells dynamically interact with their world based on evolved abilities. Accumulation of evolution points allows you to evolve select members of your cell colony.
    Downloads: 1 This Week
    Last Update:
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  • 23
    A game of the classic Dots and Boxes game optimized for mobile devices.
    Downloads: 1 This Week
    Last Update:
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  • 24

    Text Browser-Based MMO

    Text Browser-Based MMO is a project with with forum integration.

    TBBM (Text Browser-Based MMO) is my personal bachelor's degree project which aims to integrate activity on forum, such as posting, liking, helping others etc., as a reward for possible energy (or some kind of resource) points in-game to promote community interaction, which can also be not related to the game itself. Hopefully this way communities can be much more active and interactive, than just sticking to the topic they are about, expanding the possibilities and offering a lot of fun and reasons to socialize with other members.
    Downloads: 1 This Week
    Last Update:
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  • 25
    AirPirates

    AirPirates

    Steampunk airplanes dogfighting with zeppelins

    AirPirates - Krazy Kraut is the latest campaign in a steampunk dieselpunk teslapunk setting with amazing airplanes fighting zeppelins.
    Downloads: 0 This Week
    Last Update:
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