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.

  • ThermoGrid Contractor Management Software Icon
    ThermoGrid Contractor Management Software

    ThermoGrid is a specialized contractor management software tool for managing field service operations

    Nail down how you manage your day-to-day and level up your services. Whether you are a plumber, electrician, or HVAC technician, ThermoGrid brings together all areas of your business so you can get the job done right.
  • Automated quote and proposal software for IT solution providers. | ConnectWise CPQ Icon
    Automated quote and proposal software for IT solution providers. | ConnectWise CPQ

    Create IT quote templates, automate workflows, add integrations & price catalogs to save time & reduce errors on manual data entry & updates.

    ConnectWise CPQ, formerly ConnectWise Sell, is a professional quote and proposal automation software for IT solution providers. ConnectWise CPQ offers a wide range of tools that enables IT solution providers to save time, quote more, and win big. Top features include professional quote or proposal templates, product catalog and sourcing, workflow automation, sales reporting, and integrations with best-in-breed solutions like Cisco, Dell, HP, and Salesforce.
  • 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moved to Github: https://github.com/BZFlag-Dev/bzflag (The SourceForge binary releases for Windows and macOS are very outdated.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: 2,654 This Week
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  • 2
    Terasology

    Terasology

    Open source voxel world

    Terasology is a free and open-source survival and discovery game set in a voxel world. Influenced by Minecraft, Dwarf Fortress and Dungeon Keeper, it offers a unique and enjoyable building and playing experience. Terasology requires Java 8 and an updated graphics card driver.
    Downloads: 15 This Week
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  • 3
    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: 233 This Week
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  • 4
    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: 188 This Week
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  • High-performance Open Source API Gateway Icon
    High-performance Open Source API Gateway

    KrakenD is a stateless, distributed, high-performance API Gateway that helps you effortlessly adopt microservices

    KrakenD is a high-performance API Gateway optimized for resource efficiency, capable of managing 70,000 requests per second on a single instance. The stateless architecture allows for straightforward, linear scalability, eliminating the need for complex coordination or database maintenance.
  • 5
    Scrabble3D
    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.
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    Downloads: 165 This Week
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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: 267 This Week
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  • 7
    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: 272 This Week
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  • 8
    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: 106 This Week
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  • 9
    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: 71 This Week
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  • Locstatt Safety Management System Icon
    Locstatt Safety Management System

    For companies searching for a powerful HSSE management software

    Locstatt is an affordable, totally integrated Health, Safety, Security, and Environmental (HSSE) management software system. We gather and compress on-site data encompassing your entire Safety Management System, and deliver it to one simple dashboard.
  • 10
    Linux Air Combat

    Linux Air Combat

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

    WW2 Combat Flight Simulator. Free. Current Version: 9.55. 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=PL1IYes9MY6lIp5aM0tAVE9u853Pk9dSpR
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    Downloads: 95 This Week
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  • 11
    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: 51 This Week
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  • 12
    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.
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    Downloads: 71 This Week
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  • 13
    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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  • 14
    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: 55 This Week
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  • 15
    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: 61 This Week
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  • 16
    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: 45 This Week
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  • 17
    Fast 2d tank arcade game with multiplayer and split-screen modes.
    Downloads: 47 This Week
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  • 18
    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: 51 This Week
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  • 19
    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: 49 This Week
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  • 20
    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: 88 This Week
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  • 21
    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: 38 This Week
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  • 22
    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: 36 This Week
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  • 23
    Impostor

    Impostor

    An open source reimplementation of the Among Us Server

    Impostor is an open source reimplementation of the Among Us Server, written in C#. It is among the first Among Us private servers with support for Steam, Itch, Android and iOS. It is a full replacement of the game's official server, so you can expect all of the game's features to be included, and the same fun playing experience. The difference of course is that you get to play on a private and secure server. Impostor has plugin support as well as a server-sided anticheat feature. You also have the option of playing on a server hosted by someone else.
    Downloads: 1 This Week
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  • 24
    Kirstens Viewers
    Opensource Created Custom Viewers For Virtual Worlds like SecondLife
    Downloads: 25 This Week
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  • 25
    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: 72 This Week
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Open Source Multiplayer Games Guide

Open source multiplayer games are digital video games that are developed with a focus on allowing users to access, modify, and redistribute the game's code. The source code—that is, the instructions used to create the game—can be freely accessed by anyone who has an interest in doing so. The player can then use this source code to make changes to the game; these changes could include adding new features or modifying existing ones. This type of freedom encourages collaboration among developers and allows for shared experiences and ideas.

The most popular open-source multiplayer games today involve action-based gaming such as first-person shooters and real-time strategy titles. Some examples include Unreal Tournament, Quake III Arena, Counterstrike Source, Warzone2100 and OpenTTD (Transport Tycoon Deluxe). These games typically feature online competition between players via either official or third-party servers, allowing people from remote locations around the world to join each other in a virtual environment. They also often incorporate user modification tools that allow gamers to customize their playing experience according to their individual preferences.

In addition to action-oriented titles like these there are also many types of open source multiplayer RPGs available on systems like Linux which provide players with an expansive world filled with quests and adventure opportunities. These might include classic fantasy settings such as Ultima Online or something more modern like Anacreon: Reconstruction 4021 for example. Through activities including melee combat and resource management challenge levels become progressively harder; some gaming communities even develop elaborate story arcs with role play components added into it for extra texture/depth too. Such worlds offer near limitless possibilities for those looking for a captivating virtual landscape wherein imagination know no bounds.

Open source multiplayer platforms have become increasingly more popular over recent years due in large part to their accessibility; anyone can download the game’s code from its primary website or from third party sites at no cost whatsoever – providing great value than traditional commercial releases where prices can vary greatly depending upon platform availability/game popularity etc. Such free access also means gamer communities tend towards larger numbers too plus they’ll benefit from far greater support options such as tutorials & FAQs plus bug reports due mainly being largely self regulated (though developers may still exercise control) but ultimately providing much richer opportunity emerging entertainment offerings - collectively creating momentum amongst passionate enthusiasts who help shape future genres together through sharing experiences together online.

What Features Do Open Source Multiplayer Games Provide?

Open source multiplayer games provide a wide range of features, allowing players to have a fully immersive online gaming experience. These features include:

  • Multiplayer Modes: Open source multiplayer games come with multiple game modes, allowing for different types of play such as co-op and team deathmatch options. This makes the game more exciting and allows players to choose how they want to enjoy their time playing the game.
  • Player Customization: Open source games also offer customization options for players’ characters, levels, vehicles, weapons, etc., so that each person can create a unique gaming experience tailored to their individual tastes.
  • Cross-Platform Play: Many open source multiplayer games allow for cross-platform play between PC, console and mobile devices, meaning you can join up with friends no matter which device they use.
  • Dedicated Servers: An important feature is the option of dedicated servers hosted by third parties – this ensures everyone has an equal chance at victory regardless of where they are located in relation to other players. This can greatly enhance competition and make matches run smoother.
  • Mods & Add-Ons: With open source code comes access to fan made mods or add-ons which further expand upon the basic version of a game; this adds variety and keeps things fresh even after long periods of playing it.

Types of Open Source Multiplayer Games

  1. Massively Multiplayer Online Role-Playing Games (MMORPGs): These are complex, persistent virtual worlds where players can create and customize their own character, interact with others while they explore the environment, solve puzzles, and progress through various storylines. Players often join guilds or clans to further their experience. Examples of MMORPGs include World of Warcraft and RuneScape.
  2. First-Person Shooters: FPS games are generally fast-paced action games in which players fight against each other using weapons such as guns or swords. Players have the ability to communicate with one another in real time while they battle it out on a digital battlefield. Examples include Counter Strike and Team Fortress 2.
  3. Real-Time Strategy (RTS) Games: In RTS games, players must construct buildings in order to accumulate resources that will be used for unit creation and tech upgrades. It requires tactical decision making capabilities as well as extensive knowledge about enemy patterns in order to succeed at the game. Popular RTS titles include StarCraft II and Total War series.
  4. Racing & Driving Simulations: These open source multiplayer games involve simulated cars racing around various tracks trying to beat their opponents times by using various tactics such as drafting or blocking opponents' vehicles judiciously throughout the course of a race/lap. Examples include DiRT Rally and Assetto Corsa Competizione.
  5. Sports & Recreation Simulations: Open source sports simulations require gamers to build a team from scratch by recruiting real professional athletes who will then compete against other teams run by real life people from all over the world either online or offline via local network play sessions. Some examples are Football Manager 2020 Series and Out Of The Park Baseball 20 Series.
  6. Adventure & Exploration Games: These titles typically involve solving puzzles set out across expansive environments both indoors (such as dungeons) and outdoors (farms, forests etc). Along with puzzle solving come elements such as exploration of unfamiliar lands coupled with challenging enemy encounters which make up some of these immersive adventures like Minecraft or Stardew Valley.

What Are the Advantages Provided by Open Source Multiplayer Games?

  1. Cost-Effective: Open source multiplayer games are typically free to download, making them a cost-effective option for gamers who want to access it on their own. Many open source games are also supported by additional resources such as downloadable content and modding communities which make them more engaging over time.
  2. Variety of Games: Open source multiplayer games cover many types of genres, ranging from role-playing and strategy games to first person shooters and real-time strategy games. This means there is an extensive variety of game types available for players to choose from, making it easier for everyone to find something that suits their individual tastes.
  3. Accessibility: Open source multiplayer games can be accessed on a variety of platforms including PC, consoles and mobile devices. This makes them accessible to almost anyone with an internet connection who wants to take part in online gaming action no matter where they are located in the world.
  4. Community Support: One of the most unique aspects about open sources multiplayers is the immense amount of community support that come with these types of titles. There are usually dedicated forums devoted to each title where players can exchange ideas and tips, discuss strategies or just hang out with other likeminded gamers who enjoy the same type of game as they do.
  5. Modding Opportunities: Another great benefit provided by open source multiplayer titles is the ability for modders (moderators) get involved in altering or adding features into existing versions of the game through mods (mods being external extras). These customizations offer users even more ways to customize their gameplay experience and add a whole new level depth into even older titles which may otherwise have become outdated over time due its age or lack gameplay options offered by newer releases.

What Types of Users Use Open Source Multiplayer Games?

  • Casual Players: Casual players are users who enjoy open source multiplayer games with their friends, family members, or even strangers. They don't take the game too seriously and often play just for fun.
  • Hardcore Gamers: Hardcore gamers are those who spend upwards of several hours a day playing an open source multiplayer game, usually trying to climb ranks in competitive play or unlocking all the content available.
  • Competitive Players: Competitive players thrive on competition; they love to win games and enjoy pushing their skills to the limit against other players online. They consistently strive for better mechanics, strategies, and tactics in order to get ahead of their opponents.
  • Social Players: Open source multiplayer games offer social engagement - allowing users to meet new people, form teams with like-minded individuals in pursuit of common goals, and engage in friendly banter with one another. Social players prioritize these interactions as much as they do winning the actual game itself.
  • Esports Enthusiasts: A subset of competitive players is made up by esports enthusiasts – people who follow professional esports tournaments devotedly and admire top-ranked professional teams around the world. They strive to be part of this scene by aspiring towards pro-level performance themselves or simply cheer on their favorite team from afar.
  • Content Creators & Streamers: Content creators use open source multiplayer games as a platform to create videos & streaming broadcasts for both entertainment purposes (e.g., gameplay montages) and educational ones (e.g., tips & tricks). These content creators also rely heavily on interaction with viewers so that they can discuss strategies & tactics together in real time during livestreams or address questions & comments left on previously recorded videos within comment sections.

How Much Do Open Source Multiplayer Games Cost?

Open source multiplayer games typically do not have a cost associated with them. These games are made freely available for anyone to download, play, and modify as they see fit. There may be development costs associated with the creation of the game and any updates or new versions that are released in the future but it is up to the individual or organization creating the game. Some open source games might require players to pay for certain features or additional content, but this is usually very minimal compared to other types of online gaming services. Open source multiplayer games can also be hosted on independent servers which could incur additional costs if you want to host your own version of a particular game. All in all, playing an open source multiplayer game should not incur any significant cost beyond what would be expected when playing any type of video game.

What Software Can Integrate With Open Source Multiplayer Games?

Open source multiplayer games can integrate with a wide variety of software types. For example, game clients and APIs can be used to create user interfaces that allow users to launch the game, access settings, and interact with other players. Furthermore, tools like modding tools and server administration tools can be integrated to provide customizations for the game or support for running a dedicated server. Additionally, analytics software allows developers to collect data about their players' behavior patterns in order to better understand how they are playing. Finally, SDKs (Software Development Kits) are often available which allow users to build custom solutions using an open source project's codebase. All of these types of software can work together to make open source multiplayer games more accessible and enjoyable for players.

Trends Related to Open Source Multiplayer Games

  1. Increased Accessibility: Open source multiplayer games are becoming increasingly accessible to more people. They are being released on a variety of platforms, including mobile and console systems, making them available to a wide range of users.
  2. Cross-Platform Compatibility: Open source multiplayer games are often designed to work on multiple platforms, allowing gamers to play the same game regardless of their device. This makes it easier for players from different parts of the world to enjoy the same experience.
  3. Emphasis on Social Interaction: Open source multiplayer games emphasize social interaction between players. Many games allow for voice chat or text-based chatting, which can help build friendships and foster a more connected gaming community.
  4. Lower Cost: The cost of open source multiplayer games is typically much lower than those of traditional video games, making them more affordable for many gamers.
  5. More Creative Freedom: Many open source multiplayer games allow for user-generated content and modification, giving players more freedom to customize their gaming experience. This allows them to create unique experiences that may not be available in traditional titles.

How To Get Started With Open Source Multiplayer Games

  1. Getting started with using open source multiplayer games is relatively straightforward and generally doesn't require any technical knowledge or experience. The first step is to find the open source game that you want to play. A great place to start looking is through an online repository like GitHub, where many free and open source projects are stored (and often actively developed). However, there are also plenty of specialized websites that host and list a variety of different open source games. Once you've identified a game you'd like to play, download it onto your computer or gaming system.
  2. Before actually starting the game, make sure you have read the documentation or game manual available on the developer's website (or elsewhere) so you know how to get started and how everything works. Additionally, if this is an online multiplayer game, you might need to connect with friends over a network connection in order for them to join your session - make sure everyone has this setup before beginning.
  3. Finally, dive into the actual playing experience itself. You'll likely find yourself learning quickly as many open source games come with an active community; from resources such as forums or blogs that offer tips and tricks for completing missions/levels or strategies for succeeding in competitive modes. You can also look up mission walkthroughs or ‘Let’s Plays’ on YouTube – these will help even more when it comes time for playing actual matches within the community.