A 3d game engine on stage3D
C++ Text Adventure Engine
Free Android 2D OpenGL Game Engine
Turn Based Game Engine (GMS GML)
A retro style video game engine for RPGs and adventure games.
Role Playing Game Engine
2D Game Engine, based on OpenGL and focused on Isometric Games
Smokin' Guns - unofficial release for Mac OS 10.5
A truly extensible cross-platform game engine
A lightweight HTML5 Game Engine
First-person game engine
UtiliGame is a light-weight game engine written in Java.
Game engine for Shining-Force style tactical RPGs
2D Game Engine for the Java Programming Language
Java Client + JS/Canvas Server-Side System, with maintained Objects
Javascript adventure game engine
WIP Game engine
Scripting language of the hawk game engine