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

  • Say goodbye spreadsheets and wall calendars. Hello automated task and employee scheduling. Icon
    Trusted by thousands, Operto Teams (formerly VRScheduler) puts everything you need to get your vacation rental work done in one place. It's the calm, organized way to manage your cleaning or vacation rental property management staff.
  • Practice Management for Medical Professionals Icon
    Practice Management for Medical Professionals

    For Solo Practice, Group Practice, Telehealth Marketplace, Practitioners, Operational Leaders

    Upvio is the most seamless and efficient practice experience platform, created to streamline workflows, eliminate repetitive admin time, and drive success in a digital-first healthcare ecosystem.
  • 1
    BZFlag - Multiplayer 3D Tank Game
    OpenSource OpenGL Multiplayer Multiplatform Battle Zone capture the Flag. 3D first person tank game. Download the latest version at https://www.bzflag.org/downloads/ Development has moved to Github: https://github.com/BZFlag-Dev/bzflag (The SourceForge binary releases for Windows and macOS are very outdated. Please download the latest version from our website.)
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    Downloads: 2,343 This Week
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  • 2
    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: 198 This Week
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  • 3
    Opticraft is a custom server for Classic Minecraft multiplayer developed in python. It makes use of no extra dependencies, it is not based off Myne, and requires python 2.6. It aims to be light weight as well as easy to setup and use.
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    Downloads: 439 This Week
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  • 4
    Odamex

    Odamex

    Odamex is a free, cross-platform, modern client-server Doom engine

    Odamex is a free, cross-platform (Mac, Windows, Linux) modification of the Doom engine that allows players to easily join servers dedicated to playing Doom online. The goal of Odamex is to add enhancements to Doom while still retaining that "classic Doom feel" we all know and love about the original game.
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    Downloads: 325 This Week
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  • Tricentis qTest for Unified Software Test Management Icon
    Scalable test management, operations, and analytics to centralize testing and orchestrate quality at speed, with visibility throughout the software development lifecycle.
  • 5
    Nexuiz is a multiplayer first-person shooter. It is distributed under the GNU General Public License (GPLv2). Version 1.0 was released on May 31, 2005. The current version is, 2.5.2.
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    Downloads: 98 This Week
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  • 6
    Scrabble3D
    <b>The project is continued at https://github.com/Scrabble3D. Find the latest program version under Binaries.</b> Scrabble3D is a highly customizable Scrabble game that not only supports Classic Scrabble and Superscrabble but also 3D games and own boards. You can play local against the computer or connect to a game server to find other players.
    Downloads: 102 This Week
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  • 7
    America's Army 2.5 Assist

    America's Army 2.5 Assist

    Classic America's Army

    A GUI client application for Downloading Installing and Playing Americas Army 2.5 on Windows, Mac and Linux with a new custom authorization system. On the server side a Desktop server manager for Windows, Mac and Linux and a Command line dedicated server manager for Windows and Linux. Backend server components include a replacement authorization system using the Battletracker account & stats database and a PunkBuster log streaming server which records players possible cheating activities.
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    Downloads: 84 This Week
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  • 8
    0 A.D.

    0 A.D.

    0 A.D. is a free, open-source, cross-platform real-time strategy game.

    0 A.D. (pronounced "zero ey-dee") is a cross-platform real-time strategy (RTS) game of ancient warfare. It's a historically-based war/economy game that allows players to relive or rewrite the history of ancient civilizations, each depicted at their peak of economic growth and military prowess.
    Downloads: 68 This Week
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  • 9
    Zod Engine
    Zod Engine is a remake of the 1996 classic game by Bitmap Brothers called Z. Z is a capture the flag style RTS. In this game you command robots and vehicles with the purpose of destroying the enemy's fort. Please visit http://zzone.lewe.com/ for more
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    Downloads: 66 This Week
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  • The only People Development Hub that weaves together learning, talent development, and performance improvement. Icon
    Learn Amp is the complete People Development Hub. Weaving together learning, community, and talent development to power performance. Enabling modern companies to balance people-led and company-led learning, and align individual progression with collective goals. Technology on its own is not a silver bullet. Get software with a service (SwaS) through our expert coaching and advisory services. Our consultative approach has led to a 96% retention rate of happy customers. Speak to us to find out more and join future-thinking organizations like Metro Bank, GAIL's Bakery and Specsavers in consolidating and replacing their tech stack with Learn Amp. Platform packages are flexible and scalable. LEARN; combine engaging LXP and powerful LMS tools. CONNECT; drive higher engagement and better knowledge transfer with cutting edge social features. DEVELOP; improve and measure competencies and connect the right people to the right skills learning; integrate and align performance with L&D goals
  • 10
    SpaceZero

    SpaceZero

    A 2D Real Time Strategy space combat game.

    SpaceZero is a RTS 2D space combat, single and multiplayer (two players by now) net game. Your objective is to conquer all space. At the starting point the player owns a spaceship which has landed on a planet. Your first task is to acquire new spaceships and find new planets in the Galaxy.
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    Downloads: 71 This Week
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  • 11
    Ur-Quan Masters HD

    Ur-Quan Masters HD

    Ur-Quan Masters High Definition

    Ur-Quan Masters HD Mod. An HD remake of Star Control 2. It's the full Ur-Quan Masters game but also featuring a high resolution mode, new features, & new artwork.
    Downloads: 56 This Week
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  • 12
    OpenKore

    OpenKore

    OpenKore is an automation tool for Ragnarok Online

    OpenKore is an automation tool for Ragnarok Online-compatible games, authorized to be used on KoreRO. **MOVING TO GITHUB** As of February 28th 2016, the OpenKore project has moved to GitHub. Please see the OpenKore wiki for more information: http://openkore.com/index.php/Git This SourceForge page will remain online for now, but the project has been locked in "read-only" mode and no more updates will be published here. **DOWNLOADING KORE FROM THIS PAGE WILL GIVE YOU AN OLD VERSION**
    Downloads: 38 This Week
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  • 13
    Linux Air Combat

    Linux Air Combat

    Combat Flight Simulator for LINUX. WW2. Network and VOIP. Open-source.

    WW2 Combat Flight Simulator. Free. Current Version: 9.68. This is now the world's leading open-source combat flight sim for LINUX. Linux Air Combat ("LAC") was derived from the classic "gl-117" game, after a huge re-write to create a far more realistic plane simulator. LAC runs on almost any desktop LINUX system (even Steam Deck & Raspberry Pi) and generates smooth, high-performance flight. Clean, open source code provides an easy option to compile it yourself, or use our precompiled executable in "AppImage" format to eliminate compiling on all popular X86 LINUX distros. If you don't want to compile from source code, just download the AppImage and run it! Control simulated flight with mouse and keyboard, console game controller, or joystick. Learn all about LAC from our primary, official Web Page: http://askmisterwizard.com/2019/LinuxAirCombat/LacOnlineDocs.htm Recent vid clips: https://www.youtube.com/playlist?list=PL1IYes9MY6lKVUarE5wwKmwghs83Qjtz-
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    Downloads: 47 This Week
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  • 14
    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, 13 races, 15 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: 51 This Week
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  • 15
    Fast 2d tank arcade game with multiplayer and split-screen modes.
    Downloads: 44 This Week
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  • 16

    coldev

    C/C++ , PHP, PYTHON, 3D ENGINES, CHROME NATIVE CLIENT

    + C/C++ and PHP projects, Python and Others + 3D ENGINES + Videogames Projects based in Bennugd http://www.bennugd.org Web Page https://coldev.sourceforge.io/
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    Downloads: 180 This Week
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  • 17
    Kirstens Viewers
    Opensource Created Custom Viewers For Virtual Worlds like SecondLife
    Downloads: 50 This Week
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  • 18
    Performous

    Performous

    The All-in-One music game

    Performous is an open-source rhythm/performance platform that contains singing, guitar/bass playing, drumming and dancing all in one game.
    Downloads: 30 This Week
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  • 19
    Foobillard++
    An OpenGL Billard Game based on foobillard 3.0a with patches, new features (hud, jumpshots, correct detection of lost balls, more sound and graphics etc). Optimized for touch. New designed mouse / touch-control. On Facebook: www.facebook.com/Foobillardplus Some Videos: http://www.youtube.com/user/foobillardplus/videos
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    Downloads: 38 This Week
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  • 20
    ATC-pie

    ATC-pie

    Air traffic control tower and radar simulator (solo + multi-player)

    ATC-pie is an air traffic control simulation program. It features solo, multi-player and teacher-student sessions, rendering 3D views of airports through FlightGear. It is essentially designed for realism, and simulates real-life ATC tasks and equipment such as strip racks and sequence management, handovers to/from neighbouring controllers, flight plans, primary & secondary radars, RDF, CPDLC, ATIS recording...
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    Downloads: 43 This Week
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  • 21
    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: 33 This Week
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  • 22
    FreeCS

    FreeCS

    FreeCS is a free-software reimplementation of Counter-Strike 1.5.

    FreeCS is a free-software reimplementation of Counter-Strike 1.5 running on the FTEQW engine. All it is, is a game-logic re-implementation in QuakeC, an architecture independent programming language. FreeCS is not a game-engine as it relies on FTEQW (released under the GPL V2). All this makes it possible to play FreeCS on virtually any platform! No DRM! No third-party accounts! Just download, play, contribute. The game-logic is written by me with help of twhl.info's wiki. It has since been incorporated into the Nuclide project, which re-implements more than just CS 1.5.
    Downloads: 32 This Week
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  • 23
    Egoboo

    Egoboo

    Free 3D Roguelike action RPG

    Egoboo is a working cool 3D dungeon crawling game in the spirit of nethack. Currently it is supported by Windows, Linux and Mac.
    Downloads: 29 This Week
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  • 24
    lol2dae

    lol2dae

    A League of Legends model converter

    lol2dae is an open source application written in C++ that converts models from the game League of Legends. It currently supports all models with a.skn filename extension and converts to them to the COLLADA format with a.dae filename extension. lol2dae also has the capability to import skeleton files with a .skl filename extension and output fully rigged and weighted models.Animation files with a .anm filename extension can also optionally be applied to a model's skeleton. To compile lol2dae from source the IlmBase library is required.
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    Downloads: 89 This Week
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  • 25
    TKD Scoring Wi-Fi

    TKD Scoring Wi-Fi

    TKD Scoring Wi-Fi Server supporting Android and IPhone clients

    Scoring Wi-Fi PRO system was created by Taekwondo people like you and we use the scoring system in all our classes, just like you We created this app few years ago to provide an effective, professional low cost solution with the same benefits and feeling experience, or even providing a better experience than any existing wired professional tournament solution The success of the application in our Taekwondo sparring classes where our members described the application as “Holy crap this is incredible! This looks even more professional and easier to use than any of the programs I’ve ever seen used at comps.” and “Hey... just installed everything and it’s unreal! Everything works perfectly, looks great!” encouraged us to make it public for everybody Like any scoring system the “TKD Scoring Wi-Fi” system has few basic components: *TKD Scoring Wi-Fi Server(PC or Android) *TKD Scoring Wi-Fi Client(Android or IPhone) *TKD Scoring Wi-Fi Remote Score Display (Android)
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    Downloads: 49 This Week
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