Top 238 multiplayer open source projects

⚔ Colyseus Multiplayer SDK for Unity

A remake of the popular battle royale game, Fortnite, made in Unreal Engine 4 and integrated with Amazon GameLift

⚔ Colyseus Multiplayer SDK for JavaScript/TypeScript

Godot client for Nakama server written in GDScript.

Unity client for Nakama server.

Multiplayer, fast-paced Moba style game

The RS485 take on LogisticsPipes -- ESTḌ 2012

3D multi-player tank battle game

World of Warcraft client-server combat system implementation in Unity with Photon Bolt.

PyDark is a 2D and Online Multiplayer video game framework written on-top of Python and PyGame.

A fan-made multiplayer Super Mario Bros. style deathmatch game

💪 SEGS - Super Entity Game Server

A Unity First Person Shooter game made with Forge networking as an example project.

Flexible, extensible, and scalable video game matchmaking.

A skribbl.io alternative - Play at https://scribblers-official.herokuapp.com/

A multiplayer piano using UDP sockets that can be played using computer keyboard, in the terminal

Third-person Survival Game for Unreal Engine 4 (Sample Project)

Draw what you see, and guess what your friends drew

A WebSocket library optimized for multiplayer JS games, works on WebWorkers with binary data.

Features a Networking Framework to be used on top of Unity Networking, in order to implement an Authoritative Server with Lag Compensation, Client-Side Prediction/Server Reconciliation and Entity Interpolation

Mr.Boom is an 8 player Bomberman clone for RetroArch/Libretro

The Open-Source IO Shooter is an open-source multiplayer game in the browser

UNMAINTAINED: Please have a look at the entity-system

Zetrith's Multiplayer mod for RimWorld

A 2d game that aspires to be similar to Rimworld, with more depth, magic, and RPG concepts.

Ore Infinium, Open Source multiplayer Terraria-inspired Sci-fi game, focused on technology, devices and researching. Written in Kotlin (JVM), LibGDX. Cross platform

An open-source 2D HTML5 adventure based off BrowserQuest (BQ).

Reldens - You can make it - Open Source MMORPG Platform

Command the forces of The Project in a battle to rebuild the world after mankind has been nearly destroyed by nuclear missiles. A 100% free and open source real-time strategy game for Windows, macOS, Linux, BSD+

Free (as in freedom) open source clone of the Age of Empires II engine 🚀

A retro multiplayer shooter

BetterSpades, an Ace of Spades client targeted at low end systems (GL/ES 1.1). Runs on your grandmother's rig!

SpatialOS GDK for Unity FPS Starter Project

OpenMMO - Groundwork

Colyseus Game Server examples for learning purposes

ARKit multiplayer experience explanation & example

🚗 🏎️ 🎮 online 3D multiplayer neural networks based racing game

An open source re-implementation of RollerCoaster Tycoon 2 🎢

Networking framework for Entitas ECS. Targeted at turnbased games or other slow-paced genres.

In short, Forge Networking is a free and open source multiplayer game (multi-user) networking system that has a very good integration with the Unity game engine. You wanna make a multiplayer game or real time multi-user application? This is the library for you.

TOAST Haste framework is a pure java implementation of asynchronous game server framework

Python MUD/MUX/MUSH/MU* development system

Multiplayer, interactive, realtime typing speed game

YSF Server Functions

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

A CharacterController based controller for Unity's new Networking system

A simple Minecraft clone written in C using modern OpenGL (shaders).

JanusVR Presence Server

FCNPC - Fully Controllable NPC

Magic Another Game Engine

Multiplayer game server based on Node.JS

Timelines implementation for lag compensation techniques in networked games

Turn-based multiplayer example powered by Colyseus

🏆 Feature packed, easy-to-use game server API for Go back-ends and Javascript clients. Tutorials and examples included!

An open source API for GTA SA:MP

A multiplayer demo using Godot Engine's (2.2) high level networking

P2P Dots & Boxes game with WebRTC & WebTorrent

A custom scenario for Factorio which provides each player a unique starting spawn point in a multiplayer game.

gRPC server for Multiplaying in Rust

MedGui Reborn is a frontend/launcher (GUI) for Mednafen multi emulator, written in VB .Net with Microsoft Visual Studio Community