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
0 A.D. is a free, open-source, cross-platform real-time strategy game.
Combat Flight Simulator for LINUX. WW2. Network and VOIP. Open-source.
Classic America's Army
A 2D Real Time Strategy space combat game.
OpenKore is an automation tool for Ragnarok Online
Ur-Quan Masters High Definition
C/C++ , PHP, PYTHON, 3D ENGINES, CHROME NATIVE CLIENT
FreeCS is a free-software reimplementation of Counter-Strike 1.5.
Free 3D Roguelike action RPG
Cooperative multiplayer graphical RPG and adventure game
TKD Scoring Wi-Fi Server supporting Android and IPhone clients
The All-in-One music game
Air traffic control tower and radar simulator (solo + multi-player)