PoC Minecraft client written in Javascript
The Tiny JavaScript Game Engine That Can!
You can make it - Open Source MMORPG Platform
FlightGear Flight Simulator: free open-source multiplatform flight sim
ek- of wkvoetbalmanager
Web-based karaoke software suite
Online War system for IL-2 Sturmovik and Iron Front in ArmA 2
JavaScript framework to build game engines, games, emulators and apps
Free, open source game engine online
LGSL (Live Game for PHP 5.4-8+: online status for various gameservers
An open-source release of previously closed-source Farweb
XML-based framework for developing games
Teach your students how to figure out tricky texts in any language.
Playing Go with web-based turn-based Go server
Cross-Platform Game with ElectronJS
A synchronisation component for p5.js
Flash Quiz TV (A quiz game for all family)
Cosmos Tycoon is a open source transport simulation browser game.