Showing 1876 open source projects for "multiplayer"

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  • 1
    Warzone 2100

    Warzone 2100

    Free and open source real-time strategy game

    ...Supporting Windows, macOS, Linux, FreeBSD and more - all with cross-platform multiplayer support!
    Downloads: 82 This Week
    Last Update:
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  • 2
    MinecraftConsoles

    MinecraftConsoles

    A certain block game

    ...It supports running on desktop platforms with keyboard and mouse input, making it more accessible beyond its original console-focused design. The repository also includes a dedicated server implementation, enabling multiplayer experiences and LAN-based connectivity. Developers can build and modify the project using modern toolchains, making it a flexible environment for both preservation and innovation.
    Downloads: 118 This Week
    Last Update:
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  • 3
    Rune

    Rune

    Build multiplayer web games played by millions

    Rune is a game development platform focused on creating real-time multiplayer games with minimal backend code. Designed for indie developers, it handles networking, matchmaking, and server management while integrating seamlessly with JavaScript-based game engines.
    Downloads: 1 This Week
    Last Update:
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  • 4
    S&box

    S&box

    s&box is a modern game engine, built on Valve's Source 2

    ...Built on a cutting-edge game engine, s&box allows creators to prototype, build, and share interactive game modes, tools, and environments using C#, JavaScript, and visual scripting, promoting accessible content creation for developers of varying skill levels. The platform emphasizes multiplayer and community experiences, giving creators direct control over networking, physics, rendering, and audio without needing to build those systems from scratch. With real-time recompilation and fast iteration loops, developers can see changes instantly, speeding up the creative process dramatically compared to traditional engines. ...
    Downloads: 170 This Week
    Last Update:
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  • 5
    Mindustry

    Mindustry

    An open-source sandbox tower defense game

    Mindustry is a tower-defense sandbox factory game. Build supply chains of conveyor belts to fuel your turrets, produce materials for building, and defend your structures from waves of enemies.
    Downloads: 165 This Week
    Last Update:
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  • 6
    LeviLamina

    LeviLamina

    A lightweight, modular and versatile mod loader for Minecraft Bedrock

    ...By enabling modular extensions, the platform helps server operators tailor gameplay experiences and build complex multiplayer environments.
    Downloads: 7 This Week
    Last Update:
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  • 7
    OpenSoldat

    OpenSoldat

    OpenSoldat is a unique 2D (side-view) multiplayer action game

    OpenSoldat is a unique 2D (side-view) multiplayer action game. It has been influenced by the best of games such as Liero, Worms, Quake, Counter-Strike, and provides a fast-paced gaming experience with tons of blood and flesh. This repository contains the source code of the so-called 1.8 version. Compared to the original version, the code has undergone many changes but is not in a finished state.
    Downloads: 2 This Week
    Last Update:
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  • 8
    Mirror Engine

    Mirror Engine

    V1, Mirror Classic. V2, Mirror Engine: Join Discord for access

    ...The repository includes components for both the engine application and supporting server infrastructure, allowing the platform to function as a full game development ecosystem. The engine aims to simplify the process of building multiplayer experiences by providing built-in networking, asset management, and synchronization systems.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 9
    Unciv

    Unciv

    Open-source Android/Desktop remake of Civ V

    Unciv is an open-source reimplementation of the game Civilization V in Java using LibGDX. It focuses on replicating the core gameplay mechanics in a lightweight, mobile- and desktop-friendly format, supporting both single-player and multiplayer modes. Unciv uses a minimalist art style and text-based UI to deliver a fast, turn-based strategy experience.
    Downloads: 12 This Week
    Last Update:
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  • 10
    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...
    Downloads: 24 This Week
    Last Update:
    See Project
  • 11
    Counter-Strike: Football

    Counter-Strike: Football

    Multiplayer FPS game - Counter-Strike: Football

    Competitive multiplayer FPS game where two football fan teams fight with the goal of winning more rounds than the opponent team. Teams are Attackers and Defenders. The Defenders team has a goal of protecting their fan base sanctuary every round from desecrating by attackers using their graffiti bomb ball.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 12
    Xash3D FWGS Engine

    Xash3D FWGS Engine

    Xash3D FWGS engine

    ...The engine supports multiple rendering backends (OpenGL, GLES, software fallback), modern platforms (desktop OSes, mobile, etc.), and updated features such as better multiplayer, voice chat, IPv6 support, improved virtual filesystem, and support for modern asset formats. For modders or fans of classic games, Xash3D FWGS offers a way to play or build games using the familiar GoldSrc workflow but with updated portability and features. Legacy mods and maps for supported games can often be used unchanged (or with minimal modifications), preserving the classic experience. ...
    Downloads: 127 This Week
    Last Update:
    See Project
  • 13
    Agones

    Agones

    Dedicated Game Server Hosting and Scaling for Multiplayer Games

    Multiplayer dedicated game servers anywhere. An open source, batteries-included, multiplayer dedicated game server scaling and orchestration platform that can run anywhere Kubernetes can run. Define and manage groups of ready-game servers through YAML configuration or API calls. Integrated SDK for managing game server lifecycle, health and configuration.
    Downloads: 0 This Week
    Last Update:
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  • 14
    OpenRA

    OpenRA

    Real Time Strategy game engine supporting early Westwood classics

    ...This means that OpenRA is not restricted by the technical limitations of the original closed-source games: it includes native support for modern operating systems and screen resolutions (including Windows 10, Mac OS X, and most Linux distros) without relying on emulation or binary hacks, and features integrated online multiplayer.
    Downloads: 49 This Week
    Last Update:
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  • 15
    Gradient Bang

    Gradient Bang

    Gradient Bang is an online multiplayer universe

    Gradient Bang is an experimental open-source project developed within the Pipecat ecosystem that reimagines AI interaction as a persistent, multiplayer simulation where users and large language models coexist inside a shared virtual environment. Rather than functioning as a traditional application or API, it is conceptualized as an “online multiplayer universe” in which participants can explore, trade, battle, and collaborate while interacting with AI agents as active entities within the system. ...
    Downloads: 0 This Week
    Last Update:
    See Project
  • 16
    WorldEdit

    WorldEdit

    Minecraft map editor and mod

    ...Instead of placing or removing blocks individually, WorldEdit provides commands and tools that enable users to select regions of the world and apply transformations to thousands or even millions of blocks at once. This capability makes it extremely useful for constructing large builds, terraforming terrain, repairing damage, or managing multiplayer server worlds efficiently. The tool includes a variety of editing methods such as brushes, shape generation commands, and clipboard operations that allow copying, pasting, and rotating entire structures. WorldEdit can run in both single-player environments and multiplayer servers and is compatible with several modding platforms and server frameworks used in Minecraft Java Edition.
    Downloads: 14 This Week
    Last Update:
    See Project
  • 17
    Reldens - MMORPG Platform

    Reldens - MMORPG Platform

    You can make it - Open Source MMORPG Platform

    Welcome to Reldens, a platform designed to empower developers in creating multiplayer games. With a wide array of features, Reldens enables developers to craft a rich gaming experience without grappling with the complexities usually associated with making a multiplayer game secure and efficient over any network. Built with popular development tools such as NodeJS, Parcel, Colyseus, Phaser, and Firebase, integrated with various database engines, and following robust development practices, the platform ensures security, ease of use, and high customization for developers. ...
    Downloads: 0 This Week
    Last Update:
    See Project
  • 18
    FreeOrion

    FreeOrion

    Source code repository of the FreeOrion project

    ...Players manage planets, design ships, conduct research, engage in diplomacy, and wage war across a procedurally generated galaxy. FreeOrion offers a unique tech tree, customizable empires, and supports multiplayer for competitive or cooperative play. It's community-driven, open-source, and under active development.
    Downloads: 5 This Week
    Last Update:
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  • 19
    C-Dogs SDL

    C-Dogs SDL

    Classic overhead run-and-gun game

    C-Dogs SDL is an open-source, classic overhead run-and-gun game that offers both single-player and multiplayer modes. It features customizable campaigns, a variety of weapons, and supports modding, allowing players to create and share their own missions. The game has been updated to include modern features while retaining its retro charm.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 20
    Pumpkin

    Pumpkin

    Empowering everyone to host fast and efficient Minecraft servers

    Pumpkin is an open-source Minecraft server implementation written entirely in the Rust programming language with the goal of delivering high performance, efficiency, and modern architecture for hosting multiplayer worlds. Unlike the original Java-based server, Pumpkin focuses on leveraging Rust’s memory safety and performance advantages to create a fast and stable server environment. The project aims to replicate the core mechanics and gameplay of Minecraft while providing a flexible foundation for customization and optimization. Its architecture emphasizes efficient networking, resource management, and scalability, allowing servers to handle more players with reduced system overhead. ...
    Downloads: 8 This Week
    Last Update:
    See Project
  • 21
    GrimAC

    GrimAC

    Fully async, multithreaded, predictive, open source, 3.01 reach

    ...The software is designed to operate asynchronously and with multithreaded processing, allowing servers to maintain high performance even when monitoring large numbers of players simultaneously. Grim supports a wide range of Minecraft versions and can integrate with server platforms used in competitive or large multiplayer environments.
    Downloads: 10 This Week
    Last Update:
    See Project
  • 22
    Netcode for GameObjects

    Netcode for GameObjects

    Netcode that provides networking capabilities to GameObject workflows

    Netcode for GameObjects is a Unity package that provides networking capabilities to GameObject & MonoBehaviour workflows. The framework is interoperable with many low-level transports, including the official Unity Transport Package. Visit the Multiplayer Docs Site for package & API documentation, as well as information about several samples which leverage the Netcode for GameObjects package. You can also jump right into our Hello World guide for a taste of how to use the framework for basic networked tasks. We’re evolving our solution, built on Netcode for GameObjects, in the open to become a netcode foundation that you can depend on – customizable and extensible to meet the needs of many multiplayer games types.
    Downloads: 3 This Week
    Last Update:
    See Project
  • 23
    Luanti

    Luanti

    Voxel game-creation platform with easy modding and game creation

    ...This modular design enables rich customization and community-driven content: users can install new games, mods, and texture packs via a built-in content browser that draws from a central repository (ContentDB). Luanti supports both single-player and multiplayer via servers; players can host their own or join publicly listed ones, with server-side mods being applied automatically.
    Downloads: 15 This Week
    Last Update:
    See Project
  • 24
    YimMenu

    YimMenu

    YimMenu, a GTA V menu protecting against a wide ranges

    ...It operates as an injected module that interacts directly with the game engine, allowing users to access a wide range of in-game controls and customization options through an overlay interface. One of its primary goals is stability, offering safeguards against malicious or unstable interactions that can occur in multiplayer environments. The project is written primarily in C++ and follows a modular structure, enabling contributors to extend or refine its functionality over time. It includes both quality-of-life improvements and advanced features that modify gameplay behavior, making it popular among users seeking more control over their in-game experience.
    Downloads: 83 This Week
    Last Update:
    See Project
  • 25
    chess-tui

    chess-tui

    Play chess from your terminal

    ...It supports local two-player games as well as playing against any UCI-compatible chess engine, giving users flexibility to challenge engines like Stockfish or GNU Chess. For online play, it integrates with Lichess, enabling authentic multiplayer games and token-based account connections from within the terminal environment. The application also includes customization options such as different board skins and helper menus to assist players with move entry or engine configuration. With its focus on interactive play and accessibility through simple installation via package managers or direct cargo builds, it targets both casual players and power users who prefer keyboard-driven or remote environments.
    Downloads: 1 This Week
    Last Update:
    See Project
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