Showing 25 open source projects for "multiplayer"

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  • 1
    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: 8 This Week
    Last Update:
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  • 2
    World of ClaudeCraft

    World of ClaudeCraft

    Quest, group up, and raid a hand-built world, free in your browser

    ...It lets players quest, group up, raid, trade, duel, and explore a hand-built fantasy world online. The same game core supports an offline browser world, an authoritative multiplayer server, and a headless reinforcement learning environment. The project includes classes, talents, zones, quests, dungeons, raids, PvP ladders, and real multiplayer mechanics. Much of the world is generated at runtime, including towns, creatures, spell icons, sound, weather, and shadows. It also supports localization, self-hosting, AI agent training, and optional Web3 wallet integration.
    Downloads: 8 This Week
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  • 3
    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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  • 4
    Instant

    Instant

    Instant is a modern Firebase

    Instant is a modern, frontend-friendly backend / real-time database system, designed to provide reactive, multiplayer data handling with relational query syntax, offline caching, optimistic updates, and automatic rollback. It is intended to be a simpler alternative to Firebase, making front-end development more seamless by offloading backend concerns (permissions, synchronization, querying) to Instant. So we built Instant. Instant gives you a database you can use in the client, so you can focus on what’s important: building a great UX for your users, and doing it quickly.
    Downloads: 7 This Week
    Last Update:
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  • 5
    r2modman

    r2modman

    A simple and easy to use mod manager for several games

    ...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: 169 This Week
    Last Update:
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  • 6
    QM

    QM

    Multiplayer agent harness for work

    QM is an open-source multiplayer agent harness designed for startup teams and company-wide AI work. Each person, channel, and project receives its own scoped memory, files, credentials, permissions, schedules, web apps, and durable sandbox. The same agent identity and configuration can operate through Slack or the web interface. Teams can choose among supported models and harnesses, including Pi, OpenCode, Codex, and Claude Code, without binding the deployment to one vendor.
    Downloads: 3 This Week
    Last Update:
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  • 7
    Liveblocks

    Liveblocks

    Liveblocks gives you the building blocks and infrastructure

    Liveblocks is an open-source collaboration infrastructure and toolkit that enables developers to integrate real-time collaborative features into web and mobile applications with minimal effort. It provides building blocks like multiplayer cursors, comments, notifications, and AI-agent hooks that can be composed to support shared experiences such as collaborative editing, synchronized state, or embedded AI collaboration within apps. Rather than building real-time synchronization from scratch, developers can leverage Liveblocks’ SDKs and APIs to focus on their product’s unique logic while relying on robust back-end support for distributed state and event propagation. ...
    Downloads: 0 This Week
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  • 8
    TerraGov Marine Corps

    TerraGov Marine Corps

    TGMC: TerraGov Marine Corps, a SS13 mod

    TerraGov Marine Corps (TGMC) is an open source multiplayer game built on the BYOND engine, forked from the Space Station 13 (SS13) codebase. It is a tactical, role-playing game that pits groups of human marines against alien forces in large-scale, cooperative and competitive scenarios. The project focuses heavily on teamwork, coordination, and immersive gameplay, providing players with different roles such as engineers, medics, or combat marines to ensure strategic variety.
    Downloads: 0 This Week
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  • 9
    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: 7 This Week
    Last Update:
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  • 10
    Yogstation
    Yogstation is an open source fork of Space Station 13 developed and maintained by the Yogstation community. It offers a balanced mix of roleplay and gameplay, aiming to create an engaging multiplayer experience with unique mechanics and server rules. The repository contains the full SS13 codebase with modifications, including custom jobs, items, maps, and quality-of-life improvements. Yogstation prioritizes accessibility for new players while maintaining depth for veterans, making it one of the more popular SS13 community forks. ...
    Downloads: 6 This Week
    Last Update:
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  • 11
    Ancient Beast

    Ancient Beast

    The Turn Based Strategy Game/eSport. Master your beasts

    Ancient Beast is a turn-based strategy indie game project played online against other people featuring a wide variety of creatures to acquire, putting them to use in order to defeat your opponents. This project was carefully designed to be easy to learn, fun to play and hard to master. We hope you'll enjoy it. The game takes place in a dystopian future, where people have excelled in power thanks to the use of technology, specifically advanced 3d printers. The world is split into 7 factions,...
    Downloads: 8 This Week
    Last Update:
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  • 12
    TauCeti Classic

    TauCeti Classic

    Frankenstein lived

    ...TauCetiClassic emphasizes immersive roleplay scenarios, detailed station environments, and unique content compared to other SS13 forks. The project is actively developed, with ongoing updates from its community of players and coders. By extending SS13, it provides both a playable multiplayer environment and a collaborative platform for experimentation.
    Downloads: 2 This Week
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  • 13
    Better Stack JavaScript client

    Better Stack JavaScript client

    Better Stack JavaScript client

    ...Search all your logs anytime. See what metrics your teammates are looking at, comment on note-worthy data spikes and share log fragments with one click. Building a great software is a multiplayer game. Get answers fast with a powerful SQL query builder. No need to learn a new querying language or ask your data analyst.
    Downloads: 6 This Week
    Last Update:
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  • 14
    CMSS13

    CMSS13

    Contains the code for CM-SS13

    ...The repository includes the complete source code, sprites, maps, and configuration files needed to run servers or contribute to development. Compared to traditional SS13 forks, cmss13 introduces unique mechanics such as marine squads, advanced weaponry, and alien abilities, offering a combat-heavy multiplayer experience. The project thrives on active contributions from its community, ensuring continuous updates and balancing. It provides both a platform for immersive gameplay and an open development environment for fans of the SS13 ecosystem.
    Downloads: 1 This Week
    Last Update:
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  • 15
    Kanwas

    Kanwas

    Shared context board for teams and agents

    ...The platform supports real-time collaboration, visible agent tool calls, and a timeline that makes AI activity easier to follow and audit. It is designed for long-running projects where maintaining context matters as much as producing a single response. Overall, Kanwas positions itself as a multiplayer thinking space for AI-assisted research, planning, and execution.
    Downloads: 0 This Week
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  • 16
    Briefer

    Briefer

    Dashboards and notebooks in a single place

    Briefer is an open-source collaborative data platform that brings notebooks, dashboards, and interactive data apps into a unified workspace that combines the flexibility of code with the simplicity of visual exploration. It’s designed so technical users can write Markdown, SQL, and Python side by side for data analysis, visualization, and reporting, while non-technical viewers can interact with results through inputs, dropdowns, and date pickers without writing any code. Users work in a...
    Downloads: 0 This Week
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  • 17
    ideon

    ideon

    The Visual Hub for Your Projects: Centralize context on one canvas.

    ... - Spatial Organization : Move beyond abstract hierarchies; use space to define relationships. - Snapshots : Access past versions of the workspace to see how decisions and context evolved. - Multiplayer : Collaborate in real-time to maintain a shared mental model for the whole team. - Magic Paste : Instantly convert URLs, text, or images into structured blocks automatically. - Self-Hosted : Maintain full data ownership with a simple, secure Docker deployment.
    Downloads: 3 This Week
    Last Update:
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  • 18
    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:
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  • 19
    The Mirror

    The Mirror

    All-in-one game engine built on Godot. Roblox & UEFN alternative

    ...The Mirror supports visual scripting, traditional coding, asset management, physics simulation, and multiplayer networking out of the box. With built-in support for desktop, multiplayer, and VR experiences, it serves as an alternative to platforms such as Roblox and Unreal Editor for Fortnite (UEFN). Its focus on collaborative creation, live editing, and integrated development tools helps streamline the process of building interactive games and virtual experiences.
    Downloads: 0 This Week
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  • 20
    Socket.IO Redis Adapter

    Socket.IO Redis Adapter

    Adapter to enable broadcasting of events to multiple server nodes

    ...The adapter uses Redis Pub/Sub as its communication layer, so Socket.IO packets can move between processes without storing persistent session data in Redis. It is useful when an application runs behind a load balancer, in a cluster, or across multiple machines. Developers can use it for chat systems, dashboards, multiplayer apps, notifications, collaborative tools, and any real-time system that needs horizontal scaling. It still requires proper sticky-session configuration at the load balancer level because Socket.IO sessions remain tied to the server that accepted them.
    Downloads: 3 This Week
    Last Update:
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  • 21
    boardgame.io

    boardgame.io

    State Management and Multiplayer Networking for Turn-Based Games

    ...Because of its simplicity and flexibility, boardgame.io is widely used for rapid prototyping of new game ideas or building full multiplayer board games.
    Downloads: 0 This Week
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  • 22
    /tg/station

    /tg/station

    The /tg/station branch of SS13

    /tg/station is a community-run codebase for Space Station 13, a 2D, round-based, multiplayer role-playing game built on BYOND where players assume varied roles aboard a dangerously quirky space station. Space Station 13 is a paranoia-laden round-based roleplaying game set against the backdrop of a nonsensical, metal death trap masquerading as a space station, with charming spritework designed to represent the sci-fi setting and its dangerous undertones.
    Downloads: 0 This Week
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  • 23
    Lance

    Lance

    Multiplayer game server based on Node.JS

    ...Built-in physics and pseudo-physical movement help create realistic interactions between game entities. Overall, Lance focuses on delivering a smooth visual experience while keeping multiplayer logic reliable.
    Downloads: 0 This Week
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  • 24
    Turbulenz Engine

    Turbulenz Engine

    Turbulenz is a modular 3D and 2D game framework

    ...It includes not only the low-level APIs for rendering and resource control but also high-level systems like scene graphs, animation, physics modules, and service APIs that handle game-specific features like leaderboards and multiplayer. Because it’s modular, developers can pick and choose the systems they need or build on top of the framework to create custom tooling and workflows tailored to their projects. Turbulenz also comes with extensive samples and example applications that demonstrate best practices in rendering, physics, user interaction, etc.
    Downloads: 4 This Week
    Last Update:
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  • 25
    Brick Think

    Brick Think

    Free, open-source platform for running LEGO® SERIOUS PLAY® remotely

    Brick Think is a free, open-source platform for running LEGO® SERIOUS PLAY® workshops remotely.BrickThink is a free, open-source platform for running LEGO® SERIOUS PLAY® workshops remotely. It brings the full five-stage LSP methodology online — skill building, individual model, shared model, system model, guiding principles — on a shared 2D brick canvas, in real time. It pairs with your existing video call rather than replacing it. Facilitators drive each stage through a live timer and...
    Downloads: 0 This Week
    Last Update:
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