Build Cross-platform Applications
Flash Quiz TV (A quiz game for all family)
Asphyre is a cross-platform framework for Delphi and FreePascal.
A cross-platform interpreter for many point-and-click adventure games
The Atomic Game Engine is a multi-platform 2D and 3D engine
A JavaScript game library to quickly develop board games for the web
online 4X browser game engine
Remake of the classic Caesar III game
Open-source, cross-platform, C++ game engine for creating 2D/3D games
Modern AS3 Game Engine
3D .NET engine for Windows, Linux, Mac
plugin-based RPG manager in C++ and Qt5
Paintown is a 2d fighting game engine.
Small Java game such as "Connect Four" but something differently.
This is a hacking style game set in the early '80s
Cross platform 2D/3D game engine written in C++11 & OpenGL ES 2/3
Cross platform Game Creation Software
Run Android Apps in Chrome OS OR Chrome in OS X, Linux and Windows
Science Fiction, heavy assault, disestablishment of power.