Two player Table Tennis video game made usign Python's PyGame library.
Cooperative multiplayer graphical RPG and adventure game
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.
Visual Basic 6 2D online adventure game engine
A free 3d game for PC that does not limit the player. Fight,Build,Gain
A fun realistic multiplayer free-and-open-source first-person-shooter!
Stream low latency video from your desktop or webcam over TCP/IP
Lines a game written in Python two players through internet
Snakes of Apocalypse is a funny multiplayer game
FreeCS is a free-software reimplementation of Counter-Strike 1.5.
Private Online Game Launcher for Any kind of Game
An open-source, multiplayer fps based on Cube 2 Engine.
C/C++ , PHP, PYTHON, 3D ENGINES, CHROME NATIVE CLIENT
starrydb is game server engine
Clone of Urban Assault with new Graphics.
Easily create Unturned servers with little computer knowledge.
A statistics collection and tracking tool for Mechwarrior Online (R)
A Multiplayer Bao (Bawo) App for GNU
A collection of all maps and games made for the TripleA game engine
Java decentralized cross-platform network multiplayer game engine
breakout/arkanoid clone multiplayers network game at 360°!
Free strategy browsergame engine.