Top MULTIPLAYER GitHub Repositories & Tools (2026)

Share coding agents with your team on phone and desktop

An open source re-implementation of RollerCoaster Tycoon 2 🎢

TrinityCore Open Source MMO Framework (master = 12.1.0.69933, 3.3.5 = 3.3.5a.12340, cata classic = 4.4.2.60895)

Polytoria, a multiplayer gaming platform built with Godot and .NET

XMage - Magic Another Game Engine

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.

The ultimate community-driven, and open-source competitive rhythm game available on Steam.

The aim of this project is to create an Advance Wars Clone with a lot of additions customizations and modding support. For Contact Inforamtion see the wiki page. Take a view on the game.

Lightweight 2011 RuneScape multiplayer server

Dedicated Game Server Hosting and Scaling for Multiplayer Games on Kubernetes

One code, and you're in the same room. Remote multiplayer between Android emulators: 3DS, Switch, PSP, PS2, DS and WII.

🐕 Ultimate trainer & mod collection for WARDOGS. God Mode, Infinite Ammo, Unlimited Money, Stealth Mode, Perfect Accuracy, and more. Memory-only, no file modifications. Single-player practice only. NOT for online multiplayer. Steam 2026.

Thunderstore mod manager - thunderstore mods, thunderstore mod manager, peak thunderstore, peak mods, r2modman thunderstore, thunderstore download, lethal company, valheim, BONELAB, thunderstore linux, no Overwolf, 200+ games. Download:🡇

Odamex - Online Multiplayer Doom port with a strong focus on the original gameplay while providing a breadth of enhancements.