Multiplayer Framework for Node.js
An unofficial rules engine for the world's greatest card game
Arianne is an engine to develop multiplayer online games like Stendhal
State Management and Multiplayer Networking for Turn-Based Games
Open source voxel world
Open source reimplementation of GTA San Andreas game engine in Unity
A funny game for a good company similar to karaoke
A first person multiplayer shooter example project in Unity
A 2.5D Unity Local Multiplayer game
Raspberry Pi based PC - DC server
A multiplayer Blackjack game which works over the internet