Free Android 2D OpenGL Game Engine
Role Playing Game Engine
UtiliGame is a light-weight game engine written in Java.
2D Game Engine for the Java Programming Language
Java Client + JS/Canvas Server-Side System, with maintained Objects
Java game engine for shoot 'em ups, using Java2D.
A game engine in java for 2D strategy games
Java Game Engine 2D
Demonstrating the features of jMonkeyEngine 3.
Java OpenGL game engine demo.
Free MMORPG Engine. Develop and host graphical browser-based games.
Gomoku Game: Playing with Computer