Scalable open-source game backend server: multiplayer, matchmaking, leaderboards, chat, and social features for games.

⚔ Multiplayer Framework for Node.js

Dedicated Game Server Hosting and Scaling for Multiplayer Games on Kubernetes

The command-line tool for quick, simple deployment and management of Linux dedicated game servers.

A fast, scalable, distributed game server engine/framework for C++, include the actor library, network library, can be used as a real time multiplayer game engine ( MMO RPG/MOBA ), which support C#/Lua script/ Unity3d, Cocos2dx and plan to support Unreal.

A network library for client/server games written in C++

Multiplayer game server based on Node.JS

Quilkin is a non-transparent UDP proxy specifically designed for use with large scale multiplayer dedicated game server deployments, to ensure security, access control, telemetry data, metrics and more.

Jetserver is a high speed nio socket based multiplayer java game server written using Netty and Mike Rettig's Jetlang.It is specifically tuned for network based multiplayer games and supports TCP and UDP network protocols.

Hercules is a collaborative software development project revolving around the creation of a robust massively multiplayer online role playing game (MMORPG) server package. Written in C, the program is very versatile and provides NPCs, warps and modifications. The project is jointly managed by a group of volunteers located around the world as well as a tremendous community providing QA and support. Hercules is a continuation of the original Athena project.

This is an Old School horizontal scroller 'Shoot Them All' game in bash. With multiplayer modes team and duel. You have to defeat 100 aliens to fight with Boss. I'm using netcat for client-server exchange in multiplayer mode. So netcat have to be installed on system if you wish to play with friend. Terminals on both hosts have to be with equal dimensions.

Open "Minecraft-like" game with multiplayer support and Lua scripting support for the both client and server

Deterministic Lockstep with clientside prediction and rollback

A socket server (include SSL) supports realtime application, realtime game, MMORPG, messaging, chat and streaming data with TCP, UDP and Websocket

Real-time multiplayer game server based on Node + Express + SocketIO + MongoDB + ElasticSearch

BrowserQuest server in PHP base on workerman. A PHP/HTML5/JavaScript multiplayer game experiment.

A unified game launcher for STAR WARS Battlefront II (EA) that adds community-hosted multiplayer with full mod support, a server browser, private games, and more.

🕹️ A simple realtime Pokémon MMO game build with Phaser 3, Colyseus.io & Webpack 4

HTML5 multiplayer game engine (Now archived, new version available at https://github.com/moddio/moddio2)

"Fish Game" for Godot is a 2-4 player online multiplayer game created as a demo of Nakama; an open-source scalable game server, using the Godot game engine.

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

A simple, lightweight, HTML multiplayer game server (and client) for Node.js

A simple, two player multiplayer game built to show how you can host dedicated game servers on Kubernetes.

Web-based, free and open source, remastered 3D clone of 3DO/NWC's 2000 card game Arcomage. 16 languages. Desktop or mobile Android iOS. Online or offline PWA. Against AI or Multiplayer (P2P, no server). 🧝👾🃏 (ts+react+redux+rxjs, CSS-based anim, WebRTC)

Game Server SDK for PlayFab Multiplayer Servers

"Fish Game" for Macroquad is an online multiplayer game, created as a demonstration of Nakama, an open-source scalable game server, using Rust-lang and the Macroquad game engine.

This multiplayer demo is a cloud first implementation of a global scale, realtime multiplayer game utilising dedicated game servers, utilising both Google Cloud's products and open source gaming solutions.

ToyBattlesHQ serves as the central public repository for the server used by ToyBattles - the first (ever!) open-source server emulator for MicroVolts.

TenIO is an open-source project for making online games that includes a java NIO (Non-blocking I/O) based server specifically designed for multiplayer games and simple existing game clients for rapid development: Libgdx (Java), Cocos2d-x (C++), Unity (C#), Phaserjs (Javascript).

Lightweight 2011 RuneScape multiplayer server