TrinityCore - TrinityCore Open Source MMO Framework (master = 7.3.2.25549, 3.3.5 = 3.3.5a.12340)

•    C++

TrinityCore is a MMORPG Framework based mostly in C++. It is derived from MaNGOS, the Massive Network Game Object Server, and is based on the code of that project with extensive changes over time to optimize, improve and cleanup the codebase at the same time as improving the in-game mechanics and functionality.

warzone2100 - Warzone 2100 - a free and open source real time strategy game

•    C++

Warzone 2100, released in 1999 and developed by Pumpkin Studios, was a ground-breaking and innovative 3D real-time strategy game. In 2004 Eidos, in collaboration with Pumpkin Studios, decided to release the source for the game under the terms of the GNU GPL, including everything but the music and in-game video sequences, which were released later.

OpenRCT2 - An open source re-implementation of RollerCoaster Tycoon 2 🎢

•    C++

An open-source re-implementation of RollerCoaster Tycoon 2. A construction and management simulation video game that simulates amusement park management. You only need a GitHub or Twitter account to access these channels.

codecombat - Game for learning how to code.

•    CoffeeScript

NOTE: The process for setting up the dev environment has changed. Please refer to the docs for details. It's both a startup and a community project, completely open source under the MIT and Creative Commons licenses. It's the largest open source CoffeeScript project by lines of code, and since it's a game (with really cool tech), it's really fun to hack on. Join us in teaching the world to code! Your contribution will go on to show millions of players how cool programming can be.

nakama - Distributed server for social and realtime games and apps.

•    Go

Distributed server for social and realtime games and apps. Build scalable games and apps with a production ready server used by ambitious game studios and app developers all around the world. Have a look at the documentation and join the developer community for more info.

agones - Dedicated Game Server Hosting and Scaling for Multiplayer Games on Kubernetes

•    Go

Agones is a library for hosting, running and scaling dedicated game servers on Kubernetes. This software is currently alpha, and subject to change. Not to be used in production systems.

evennia - Python MUD/MUX/MUSH/MU* development system

•    Python

Evennia is a modern library for creating online multiplayer text games (MUD, MUSH, MUX, MUCK, MOO etc) in pure Python. It allows game creators to design and flesh out their ideas with great freedom. Evennia is made available under the very friendly BSD license. http://www.evennia.com is the main hub tracking all things Evennia.

agones - Dedicated Game Server Hosting and Scaling for Multiplayer Games on Kubernetes

•    Go

Agones is a library for hosting, running and scaling dedicated game servers on Kubernetes. Agones replaces usual bespoke or proprietary cluster management and game server scaling solutions with a Kubernetes cluster that includes the Agones custom Kubernetes Controller and matching Custom Resource Definitions for GameServers, Fleets and more.

open-match - Flexible, extensible, and scalable video game matchmaking.

•    Go

Open Match is an open source game matchmaking framework that simplifies building a scalable and extensible Matchmaker. It is designed to give the game developer full control over how to make matches while removing the burden of dealing with the challenges of running a production service at scale. Please visit Open Match website for user documentation, demo instructions etc.

boardgame.io - State Management and Multiplayer Networking for Turn-Based Games

•    TypeScript

boardgame.io is an engine for creating turn-based games using JavaScript. Write simple functions that describe how the game state changes when a particular move is made. This is automatically converted into a playable game complete with online multiplayer features, all without requiring you to write a single line of networking or storage code.

librg - 🚀 Build simple and fast cross-platform multiplayer

•    C

Many people think that implementing networking solution for your game project is the most complicated and time consuming task. We believe many people are afraid to even try, which results in the fact, that you almost never see small games made by indie developers having any type of networking involved. Thus we hope that with this library, which is just a small step in the direction, we might help anyone and everyone who wants to add a multi-player capabilities inside one's game.

openspades - Compatible client of Ace of Spades 0.75

•    C++

OpenSpades is a compatible client of Ace of Spades 0.75. Once installed, you'll be able to launch OpenSpades from inside the desktop menu or from your terminal with the openspades command.

quilkin - 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

•    Rust

Quilkin is a non-transparent UDP proxy specifically designed for use with large scale multiplayer dedicated game servers deployments, to ensure security, access control, telemetry data, metrics and more. It is designed to be used behind game clients as well as in front of dedicated game servers.

Multiplayer-FPS - :video_game: A multiplayer first person shooter game based on Unity Game Engine

•    CSharp

:video_game: A multiplayer first person shooter game based on Unity Game Engine

tensorflow-rex-run - A TensorFlow

•    Javascript

A TensorFlow.js based AI player platform for T-Rex Runner. T-Rex Runner is originally an easter egg game inside chrome's offline error page.

mtasa-blue - Multi Theft Auto is a game engine that adds full network multiplayer functionality to Rockstar North's Grand Theft Auto game series, in which this functionality is not originally found

•    C++

Multi Theft Auto (MTA) is a software project that adds network play functionality to Rockstar North's Grand Theft Auto game series, in which this functionality is not originally found. It is a unique modification that incorporates an extendable network play element into a proprietary commercial single-player PC game. Multi Theft Auto is based on code injection and hooking techniques whereby the game is manipulated without altering any original files supplied with the game. The software functions as a game engine that installs itself as an extension of the original game, adding core functionality such as networking and GUI rendering while exposing the original game's engine functionality through a scripting language.

lasercrabs - Launch your LASERCRAB at walls, ceilings, and enemy heads in this indie multiplayer shooter where "move" and "attack" are synonymous

•    C++

Everything excluding the external directory is public domain. This repository includes a copy of the Wwise SDK. Use of the SDK is subject to the Wwise EULA. Wwise is free for educational and non-commercial purposes. Otherwise, acquire a license key from Audiokinetic.

AncientBeast - 🐺 Turn Based Strategy Game. Master your beasts!

•    Javascript

The project is developed with the use of free open source cross platform applications and freeware services. Mega comes in very handy when working on the game assets collaboratively, while GitHub handles the code part and stores the final assets. Art contributions can be made as well in our deviantArt group. Drop by our Discord chat and be a part of the community! Blender is being used for creating most of the assets, such as combat locations, creatures and their own animations, which are rendered into sprites that are usually made into sprite-sheets using our Spritify add-on, as well as for many other tasks. Krita, Gimp and MyPaint are useful for concept art, while Inkscape is useful for creating the vector creature ability icons.

setwithfriends - 🎮 A frictionless multiplayer web app that lets you play Set with friends

•    Javascript

This is the source code for Set with Friends, an online, multiplayer implementation of the real-time card game Set. Your goal is to find triplets of cards that follow a certain pattern as quickly as possible. This app was built on a serverless stack primarily using the Firebase Realtime Database, along with Firebase Cloud Functions for more complex or sensitive operations. The frontend was built with React, with components from Material UI.

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