Portable game engine with main focus on point-and-click adventures
Cerberus Content Management System
Jumping game for Linux, Windows, Android and Mac OS written on GDScrip
Build Cross-platform Applications
Flash Quiz TV (A quiz game for all family)
C/C++ , PHP, PYTHON, 3D ENGINES, CHROME NATIVE CLIENT
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
Realtime 3D engine for game development
online 4X browser game engine
Massively multiplayer online game server and client framework
Remake of the classic Caesar III game
Open-source, cross-platform, C++ game engine for creating 2D/3D games
3D .NET engine for Windows, Linux, Mac
Android, DOS, FirefoxOS, Linux, MacOS and Windows all in one..
Dragging and Dropping Components for Multi-projection Applications
plugin-based RPG manager in C++ and Qt5
Open Game Bootstrap