Browse free open source Multiplayer games and projects below. Use the toggles on the left to filter open source Multiplayer games by OS, license, language, programming language, and project status.
A collection of all maps and games made for the TripleA game engine
Odamex is a free, cross-platform, modern client-server Doom engine
Combat Flight Simulator for LINUX. WW2. Network and VOIP. Open-source.
OpenKore is an automation tool for Ragnarok Online
Classic America's Army
An open source reimplementation of the Among Us Server
Open source voxel world
Ur-Quan Masters High Definition
0 A.D. is a free, open-source, cross-platform real-time strategy game.
A 2D Real Time Strategy space combat game.
The All-in-One music game
TKD Scoring Wi-Fi Server supporting Android and IPhone clients
Cooperative multiplayer graphical RPG and adventure game
Free 3D Roguelike action RPG
An online multiplayer real time strategy game
Air traffic control tower and radar simulator (solo + multi-player)