Java Game Engine
Role Playing Game Engine
A Simple Game Engine
UtiliGame is a light-weight game engine written in Java.
Little game background framework in java.
cross-platform 2d game engine
A game engine in java for 2D strategy games
Java game engine for shoot 'em ups, using Java2D.
Framework for a graphical point and click adventure game in Java
A complete 2D Game Engine with built in drag and drop editor
Pig2D is a game engine for Java that uses a sprite-based interface.
Free MMORPG Engine. Develop and host graphical browser-based games.