Desktop/Android/HTML5/iOS Java game development framework
Spring is a free RTS engine developed for Windows, Linux and Mac OS X.
Build Cross-platform Applications
Lego Island 2 Texture Animator
Open Game Bootstrap
Mahasona engine is an open source game engine.
3D Game engine
Small OpenGL based game enegine
An Animated 2D Game in the Turbo Compiler.
Cross-platform 2D game engine
Halo Dark Interface es una Interfaz para Halo Custom Edition
A generic C++ MUD server featuring a strategy-style hexagon map