One of the best Prodigy hacks
A web-based roguelike written in Dart
The centralized hub to manage and launch all desktop applications from
Your collection, your way
Turn your phone into a wireless Xbox controller via any web browser.
Full featured MUD server with all the trimmings.
JavaScript framework to build game engines, games, emulators and apps
LGSL (Live Game for PHP 5.4-8+: online status for various gameservers
The multiplayer game engine
Java Settlers
Playing Go with web-based turn-based Go server
A cross-platform interpreter for many point-and-click adventure games
A MelonJS port of the famous Flappy Bird Game
Cosmos Tycoon is a open source transport simulation browser game.
3D urban environment renderer : browser-app ; as well as a GTA clone
The famous Maze War game recreated as a modern web application.