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

  • Auth0 for AI Agents now in GA Icon
    Auth0 for AI Agents now in GA

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    Orchestrate Your AI Agents with Zenflow

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  • 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moved to Github: https://github.com/BZFlag-Dev/bzflag (The SourceForge binary releases for Windows and macOS are very outdated.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: 2,931 This Week
    Last Update:
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  • 2
    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: 96 This Week
    Last Update:
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  • 3
    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: 69 This Week
    Last Update:
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  • 4
    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: 64 This Week
    Last Update:
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  • Dun and Bradstreet Risk Analytics - Supplier Intelligence Icon
    Dun and Bradstreet Risk Analytics - Supplier Intelligence

    Use an AI-powered solution for supply and compliance teams who want to mitigate costly supplier risks intelligently.

    Risk, procurement, and compliance teams across the globe are under pressure to deal with geopolitical and business risks. Third-party risk exposure is impacted by rapidly scaling complexity in domestic and cross-border businesses, along with complicated and diverse regulations. It is extremely important for companies to proactively manage their third-party relationships. An AI-powered solution to mitigate and monitor counterparty risks on a continuous basis, this cutting-edge platform is powered by D&B’s Data Cloud with 520M+ Global Business Records and 2B+ yearly updates for third-party risk insights. With high-risk procurement alerts and multibillion match points, D&B Risk Analytics leverages best-in-class risk data to help drive informed decisions. Perform quick and comprehensive screening, using intelligent workflows. Receive ongoing alerts of key business indicators and disruptions.
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  • 5
    Linux Air Combat

    Linux Air Combat

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

    WW2 Combat Flight Simulator. Free. Current Version: 9.83. This is now the world's leading open-source combat flight sim for LINUX. Linux Air Combat ("LAC") runs on almost any desktop LINUX system (even Steam Deck & Raspberry Pi) and generates smooth, high-performance flight. If it runs TOO fast on your hardware (framerates beyond 100 FPS), you should activate LAC's built-in FrameRate Limiter as documented here: https://askmisterwizard.com/2019/LinuxAirCombat/FrameRateLimiter.htm Clean, open source code provides an option to compile yourself, or use our precompiled executable AppImage to eliminate compiling on all popular X86 LINUX distros. Control 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 video clip: https://youtu.be/C77C-e8axWs
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    Downloads: 67 This Week
    Last Update:
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  • 6
    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: 90 This Week
    Last Update:
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  • 7
    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**
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    Downloads: 30 This Week
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  • 8
    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: 46 This Week
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  • 9
    AssaultCube Reloaded

    AssaultCube Reloaded

    A fun realistic multiplayer free-and-open-source first-person-shooter!

    ACR is a fun realistic multiplayer free-and-open-source first-person-shooter! This project has moved to GitHub. A mirror of releases is here.
    Downloads: 31 This Week
    Last Update:
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  • Pest Control Management Software Icon
    Pest Control Management Software

    Pocomos is a cloud-based field service solution that caters to businesses

    Built for the pest control industry, but also works great for Mosquito Control, Bin Cleaning, Window Washing, Solar Panel Cleaning, and other Home Service Businesses in need of an easy-to-use software that helps you simplify routing, scheduling, communications, payment processing, truck tracking, time tracking, and reporting.
    Learn More
  • 10
    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: 35 This Week
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  • 11
    Kirstens Viewers
    Opensource Created Custom Viewers For Virtual Worlds like SecondLife
    Downloads: 30 This Week
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  • 12
    Fast 2d tank arcade game with multiplayer and split-screen modes.
    Downloads: 17 This Week
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  • 13
    Ryzom
    Ryzom Core is a toolkit for the development of massively online universes. It provides the base technologies and a set of development methodologies for the development of both client and server code.
    Downloads: 17 This Week
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  • 14
    M.A.R.S. - a ridiculous Shooter
    This is a first attempt to create a game in OpenGL with SFML. It is a game for two players, flying with ships in a two-dimensional space setting, governed by the laws of gravity. There are several game modes and a lot of weapons.
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    Downloads: 8 This Week
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  • 15
    Iron Fist

    Iron Fist

    Your death sentence awaits...

    Iron Fist - Updated, improved and renewed, this new production brings the raw power of the most improved Cube 2 Engine with all new optimization and portability. Soon to be out for Linux and Macintosh OS. Iron Fist is a single-player and multi-player first-person shooter, built as a hybrid of Red Eclipse 1.2, and is a conversion of Cube Engine 2 (Sauerbraten). Iron Fist is a Cure Production. Your death sentence awaits...
    Downloads: 15 This Week
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  • 16
    NetJoy

    NetJoy

    Network gamepad/joystick

    Project NetJoy, comprising JoySender++ and JoyReceiver++, simplifies the process of remote joystick control and gaming experiences over a Local Area Network (LAN) or Wide Area Network (WAN). It provides a convenient solution for transmitting joystick inputs between Windows machines over UDP or TCP. This project is available in two versions: a console-based version and a version with a Textual User Interface (tUI). Versions are cross compatible. Requires latest MSVC Redistributable https://learn.microsoft.com/en-us/cpp/windows/latest-supported-vc-redist?view=msvc-170#visual-studio-2015-2017-2019-and-2022 Requires ViGEm Bus Driver for game pad emulation on host machine. https://github.com/ViGEm/ViGEmBus
    Downloads: 28 This Week
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  • 17
    Digital Paintball 3

    Digital Paintball 3

    3D FPS Digital Paintball 3 Multiplayer Online Game

    Digital Paintball 3 is a first person shooter (FPS) game available on Web, PC, Mac and Linux. Conflate your love for simulated sport with adventure, and what you will get is the best 3D, digital paintball 3 video game of all times! You can enjoy endless hours of pure joy and an assured excitement that gradually mounts without leaving the sanctity of your home or braving the detestation of getting wet or dirty. The new online game that we have developed so punctiliously is sure to leave you regaling to the extent that you will soon be hooked to it. One of the fastest paced multiplayer digital paintball, Paint-ball Online is a super way to exercise your mental prowess, hand-eye coordination, concentration, Digital Paintball 3 Online analytical knack, quick decision-making capabilities, and of course, your love digital paintball 3 for the actual sport. Carry the power in your hand, register at our site and feel the blues blow away.
    Downloads: 3 This Week
    Last Update:
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  • 18

    Minecraft World Utility

    Converts Minecraft world files between formats to allow editing

    The Minecraft World Utility is a set of simple tools for editing Minecraft files and converting them between formats for easier editing. MCWUtil follows the principle of small tools doing one job well and gaining power from chaining many small tools together.
    Downloads: 18 This Week
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  • 19
    Zero Ballistics
    Zero Ballistics is a unique blend of first person shooter and tank combat, focusing on multiplayer gaming exclusively.
    Downloads: 6 This Week
    Last Update:
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  • 20
    ZED Online

    ZED Online

    An online multiplayer real time strategy game

    A remake of the 1996 classic game Z. The project is currently in the early stages. More updates will come in the following weeks. Please visit zzone.lewe.com for more. ZED Online world rankings: https://zedonline.sourceforge.io/highscore.php See the wiki for more information: https://sourceforge.net/p/zedonline/wiki/Home/ Information on the different control styles can be found here: https://sourceforge.net/p/zedonline/wiki/controls/ Demo videos: https://www.youtube.com/watch?v=RKmKpTe-gVo https://www.youtube.com/watch?v=OnAJTml5znY https://www.youtube.com/watch?v=3UZSFsY6sSA https://www.youtube.com/watch?v=SFmoCg_F22w Online Multiplayer - Port forwarding In order to connect online the player who creates the game needs to enable port forwarding on their network router/NAT. The game will use port 8000 TCP. If the game can not bind the server to port 8000 it will try the next port until 8009. We recommend to forward all ports 8000-8009 TCP
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    Downloads: 6 This Week
    Last Update:
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  • 21

    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: 13 This Week
    Last Update:
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  • 22
    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.
    Downloads: 13 This Week
    Last Update:
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  • 23
    PK Rhythm

    PK Rhythm

    A game about hitting the beats of a song.

    PK Rhythm is a rhythm game based on Mother 3's battle combo system. Time your beats to the tempo and try to get 16-hit combos! It's still under development, but feel free to check it out.
    Downloads: 12 This Week
    Last Update:
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  • 24
    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: 12 This Week
    Last Update:
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  • 25
    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: 2 This Week
    Last Update:
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