Showing 1858 open source projects for "multiplayer card games"

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  • 1
    Forge: Magic: The Gathering Rules Engine

    Forge: Magic: The Gathering Rules Engine

    An unofficial rules engine for the world's greatest card game

    Forge is a comprehensive open-source rules engine and gameplay platform designed to simulate and extend the card game Magic: The Gathering in a fully digital environment. Developed collaboratively by a community of contributors, it implements the vast majority of the game’s rules and card interactions, allowing players to experience both casual and competitive gameplay without official clients. The software supports multiple play modes, including single-player against AI opponents, multiplayer sessions, and even adventure-style gameplay modes that expand beyond traditional card duels. ...
    Downloads: 43 This Week
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  • 2
    MinecraftConsoles

    MinecraftConsoles

    A certain block game

    MinecraftConsoles is an open-source project that revives and modernizes the legacy console edition of Minecraft by rebuilding it into a multi-platform, extensible codebase. It is based on the original Legacy Console Edition source and introduces numerous fixes and improvements to enhance stability, performance, and usability on modern systems. The project aims to serve as a foundation for further development such as modding, backports, and experimentation with features that were previously...
    Downloads: 122 This Week
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  • 3
    LeviLamina

    LeviLamina

    A lightweight, modular and versatile mod loader for Minecraft Bedrock

    LeviLamina is an open-source Minecraft server platform focused on extending Bedrock Edition server capabilities with a flexible plugin and development environment. The project provides a foundation for building custom server features and gameplay modifications that can run on Bedrock-based multiplayer servers. It aims to offer developers a modern architecture that simplifies the creation of plugins and server extensions while maintaining compatibility with the Minecraft Bedrock protocol....
    Downloads: 44 This Week
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  • 4
    Tkgames is a site for games written using the powerful tcl/tk language. These include my original tesselation puzzle Polypuzzle, and recent additions Hearts, Spider, Yahtzee and the tooo addictive, Tktk.
    Downloads: 0 This Week
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  • 5
    Xash3D FWGS Engine

    Xash3D FWGS Engine

    Xash3D FWGS engine

    Xash3D FWGS is an open-source fork and extension of the original GoldSrc-based engine (from the classic era of first-person shooters), aimed at providing compatibility with the original engine (e.g. games built on it) while extending and modernizing its capabilities. 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. ...
    Downloads: 153 This Week
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  • 6
    Gopher64

    Gopher64

    Highly compatible N64 emulator

    ...Overall, it is a robust solution for emulating N64 games with enhanced capabilities.
    Downloads: 188 This Week
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  • 7
    Warzone 2100

    Warzone 2100

    Free and open source real-time strategy game

    A 100% free and open-source 3D real-time strategy game. Command the forces of The Project in a battle to rebuild the world after mankind has been nearly destroyed by nuclear missiles. Play versus your friends on a local network, or try your hand at online multiplayer with an integrated lobby. Play versus AI bots in local skirmishes (or as added teammates/enemies in multiplayer), and practice your skills with endless replayability. Over 400 different technologies yield an extensive tech tree...
    Downloads: 6 This Week
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  • 8
    OpenRA

    OpenRA

    Real Time Strategy game engine supporting early Westwood classics

    OpenRA is a free and open source real-time strategy game engine for early Westwood games like Command & Conquer: Red Alert. It is not just a clone of the original but is a recreation, with improved and rebalanced gameplay that modernizes the classic Command & Conquer strategy games. It provides a common platform for rebuilding and reimagining classic 2D and 2.5D RTS games (the OpenRA mods). 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: 27 This Week
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  • 9
    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: 2 This Week
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  • 10
    Simple64

    Simple64

    Accurate N64 Emulator

    simple64 is a Nintendo 64 emulator designed to provide accurate and performant emulation of classic N64 games. It aims to replicate original hardware behavior closely while maintaining compatibility across different systems. The emulator includes support for modern graphics plugins and enhancements, improving visual fidelity beyond original hardware limitations. It also provides features such as netplay for multiplayer experiences over the internet.
    Downloads: 72 This Week
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  • 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: 4 This Week
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  • 12
    Luanti

    Luanti

    Voxel game-creation platform with easy modding and game creation

    ...Written in C++ for core performance and Lua for scripting, Luanti runs on multiple operating systems (Windows, macOS, Linux, BSD variants and even Android), making it highly accessible and cross-platform. Rather than being a single game, Luanti is meant as an engine and toolkit: individual “games” are actually collections of mods — written in Lua — that define terrain, items, NPCs, mechanics, and rules. 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: 55 This Week
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  • 13
    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: 173 This Week
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  • 14
    WorldEdit

    WorldEdit

    Minecraft map editor and mod

    WorldEdit is a powerful open-source Minecraft map editing toolkit that allows players, builders, and server administrators to quickly modify large areas of a Minecraft world directly from within the game. 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,...
    Downloads: 33 This Week
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  • 15
    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. Integration with OpenCensus for platform-independent game server metrics and monitoring dashboards. Agones replaces usual bespoke or...
    Downloads: 0 This Week
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  • 16
    Matchbox

    Matchbox

    Painless peer-to-peer WebRTC networking for rust wasm

    Matchbox is a WebRTC-based networking library for the Bevy game engine, enabling multiplayer games to run in the browser or native environments with peer-to-peer communication. It handles matchmaking, NAT traversal, and synchronization in real-time, making it easier for game developers to add fast and scalable multiplayer features. Designed with simplicity and performance in mind, Matchbox supports both WebAssembly and desktop targets.
    Downloads: 1 This Week
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  • 17
    Mirror

    Mirror

    #1 Open Source Unity Networking Library

    Mirror is a high-level open-source networking library for Unity multiplayer games. It was originally based on UNET and has evolved into a stable, modular framework used by many production Unity projects. The library is designed to make multiplayer development easier by handling common networking patterns such as network identities, synchronization, remote procedure calls, authority, spawning, and transport integration.
    Downloads: 0 This Week
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  • 18
    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: 13 This Week
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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: 8 This Week
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  • 20
    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: 19 This Week
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  • 21
    Colyseus

    Colyseus

    Multiplayer Framework for Node.js

    Colyseus is a multiplayer framework for Node.js that simplifies the creation of real-time multiplayer games and applications, providing a robust and scalable solution for developers.
    Downloads: 0 This Week
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  • 22
    r2modman

    r2modman

    A simple and easy to use mod manager for several games

    ...It allows users to download, enable, disable, update, and uninstall mods with a few clicks while keeping the base game playable through normal launchers like Steam. The tool supports multiple popular mod-heavy games such as Risk of Rain 2, Valheim, GTFO, and others, making it a central hub for Thunderstore-based modding workflows. One of its core strengths is the profile system, which lets users maintain separate mod configurations for different play styles or multiplayer compatibility.
    Downloads: 168 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...
    Downloads: 8 This Week
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  • 24
    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...
    Downloads: 8 This Week
    Last Update:
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  • 25
    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...
    Downloads: 2 This Week
    Last Update:
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