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.

  • Orchestrate Your AI Agents with Zenflow Icon
    Orchestrate Your AI Agents with Zenflow

    The multi-agent workflow engine for modern teams. Zenflow executes coding, testing, and verification with deep repo awareness

    Zenflow orchestrates AI agents like a real engineering system. With parallel execution, spec-driven workflows, and deep multi-repo understanding, agents plan, implement, test, and verify end-to-end. Upgrade to AI workflows that work the way your team does.
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  • Auth0 for AI Agents now in GA Icon
    Auth0 for AI Agents now in GA

    Ready to implement AI with confidence (without sacrificing security)?

    Connect your AI agents to apps and data more securely, give users control over the actions AI agents can perform and the data they can access, and enable human confirmation for critical agent actions.
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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moved to Github: https://github.com/BZFlag-Dev/bzflag (The SourceForge binary releases for Windows and macOS are very outdated.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
    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
    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: 78 This Week
    Last Update:
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  • 4
    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
    Last Update:
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  • Say goodbye to broken revenue funnels and poor customer experiences Icon
    Say goodbye to broken revenue funnels and poor customer experiences

    Connect and coordinate your data, signals, tools, and people at every step of the customer journey.

    LeanData is a Demand Management solution that supports all go-to-market strategies such as account-based sales development, geo-based territories, and more. LeanData features a visual, intuitive workflow native to Salesforce that enables users to view their entire lead flow in one interface. LeanData allows users to access the drag-and-drop feature to route their leads. LeanData also features an algorithms match that uses multiple fields in Salesforce.
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  • 5
    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: 61 This Week
    Last Update:
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  • 6
    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
    Last Update:
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  • 7
    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
    Last Update:
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  • 8
    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: 26 This Week
    Last Update:
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  • 9
    Vocaluxe
    Vocaluxe is an open source singing game inspired by SingStar™ and Ultrastar Deluxe. The code is hosted on github: https://github.com/Vocaluxe/Vocaluxe
    Downloads: 13 This Week
    Last Update:
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  • Rent Manager Software Icon
    Rent Manager Software

    Landlords, multi-family homes, manufactured home communities, single family homes, associations, commercial properties and mixed portfolios.

    Rent Manager is award-winning property management software built for residential, commercial, and short-term-stay portfolios of any size. The program’s fully customizable features include a double-entry accounting system, maintenance management/scheduling, marketing integration, mobile applications, more than 450 insightful reports, and an API that integrates with the best PropTech providers on the market.
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  • 10
    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
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  • 11
    ChaosEsqueAnthology

    ChaosEsqueAnthology

    A free 3d game for PC that does not limit the player. Fight,Build,Gain

    (NOTE: Make sure to download Volume2 aswell!: http://sourceforge.net/p/chaosesqueanthologyvolume2/ ) 200+ weapons. Build-able enter-able buildings (Like an FPS RPG but with interiors) (Multi-tool/ Utili-tool). City generation (all buildings enterable). A 2 iso (6GB) exploration of what QuakeC can do. Over 100 maps included, along with map editor and sourcecode. Fully free and opensource: code and media. A modification of Xonotic which included extended weapons, maps, vehicles, buildable buildings, mounted weapons, spell casting, monsters, player characters, textures, and game mode (such as colorwar (think liquidwar)) To pick up items press F. To enter vehicles/mountedguns press F. To reload press R. To walk press W A S D (direction) To jump press SpaceBar Dev Enviorment (git repos) in tar.gz: https://sourceforge.net/projects/chaosesquedevenv/ DVD Case and DVD Labels and Extras (ISO signing info): https://sourceforge.net/projects/chaoseesquesupplemental/
    Downloads: 11 This Week
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  • 12

    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: 7 This Week
    Last Update:
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  • 13
    Galaxy Forces V2

    Galaxy Forces V2

    A 2D multiplayer space shooter game

    A 2D multiplayer space shooter, inspired by the Amiga classic Gravity Force. Play race, mission or dogfight. Single player, with friends or against AI. There are 50+ levels and a map-editor included. Global hi-score and achievements with replays on the website. The game plays on Windows, Linux and Mac.
    Downloads: 3 This Week
    Last Update:
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  • 14
    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.
    Downloads: 1 This Week
    Last Update:
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  • 15
    Dead Boys (a game)

    Dead Boys (a game)

    A 2d action shooter game. Split screen for up to 4 players.

    Downloads: 3 This Week
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  • 16
    Vanilla-oIT

    Vanilla-oIT

    An unmodified version of the MMORPG Impressive Title by KovuLKD

    A courtesy to the KITO community and all those nice people I got to know along the way. The title says it: This is a vanilla unmodified Impressive Title server hosted by me and released by the KITO community. It's intended mostly for testing and those rare few, who want nostalgia. Impressive Title was made open source in 2011 by KovuLKD: The original creator of the game. It was later maintained by the KITO community, which is still acting as a beacon for various oIT creators and server owners. - This server is ONLINE! - create your own TLK lion and hunt down prey while gathering items and more - you can use this client for testing and modify the media - you are able to spawn prey and items in campaign/offline mode - you can teleport to other maps in multiplayer and campaign Vanilla-oIT Project Website: https://minerva-services.net/software/vanilla-oit.php
    Downloads: 3 This Week
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  • 17
    TChess is an extended chess played on a Torus (donut) It includes a computer player (KI) with 3 strength levels and multiplayer support. -- Please post your questions in the Help-Forum!
    Downloads: 2 This Week
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  • 18
    Rcon Controller for SA:MP

    Rcon Controller for SA:MP

    SA:MP server administration filterscript

    Rcon Controller: a SA:MP server administration tool. aims to provide real-time graphic/console monitoring / Instant managing. developed by CoolGuy.
    Downloads: 1 This Week
    Last Update:
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  • 19

    Arena1

    A little Bomberman clone programmed in C using SDL

    Controls Player 1: Moving: Arrow Keys Place bomb: Return Controls Player 2: Moving: W, A, S, D Place bomb: Tab
    Downloads: 1 This Week
    Last Update:
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  • 20
    TradeWars C

    TradeWars C

    A simple port of a Pascal version of TradeWars

    A "TradeWars" port of the old "TradeWars 200/QuixPlus" pascal into C. Currently targeting as many 16/32 environments as I can... Hopefully, soon multiuser!
    Downloads: 1 This Week
    Last Update:
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  • 21
    ASS is a project to implement an ELITE-style game with multiplayer capabilities, realistic and physically correct movement in space, trading, lots of ships, planets, guilds, fighting, exploring, aliens, evolving technology... Everything...
    Downloads: 0 This Week
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  • 22

    Advanced Tactical Wasteland

    Advanced Wasteland mission using ACE for Arma II

    Advanced Tactical Wasteland is a mission for ArmA II that incorporates ACE mod into the 404games.co.uk Wasteland version. The main code development is being done on Github. https://github.com/KRDucky/Advanced-Tactical-Wasteland
    Downloads: 0 This Week
    Last Update:
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  • 23
    Arkana - Fight To Survive (FTS)
    Arkana - Fight to survive (FTS) will be a 3D real time strategy game in the veins of Warcraft 3, AOE, EE, ... but with a twist: the focus is on online gaming and each player will have a hero which he carries from game to game.
    Downloads: 0 This Week
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  • 24
    Series of patches for the popular OpenTTD game! Check out their project at www.openttd.org
    Downloads: 0 This Week
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  • 25
    Blood Money 616

    Blood Money 616

    A Kingpin Mod - Blood Money 616

    A KINGPIN SERVER MODIFICATION Many Mods incorporated under one server roof. AUTOMATION - hypo_v8 / theghost / mrfredz ANTI-LAG MOD - hypo_v8 / theghost BLOODMONEY - hypo_v8 / theghost / mrfredz This project is just about taking KINGPIN one of the most fun 1st person shooters of all time and making it better than it use to be, maybe even making a few addons that will make the game even more fun for a while or as long as we can. 1999 the time KINGPIN was developed put this 1st person shooter ahead of everything on the shelf. It was the first game to have locational damage quarters. The 1st game to go too far! This is not a G rated game!
    Downloads: 0 This Week
    Last Update:
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