Desktop/Android/HTML5/iOS Java game development framework
A simple cross-platform game engine for creating old-school 2D games
Java Settlers
8-bit Graphical API for Java
Source code of the chapters of the book 3D Game Development with LWJGL
CSG for jMonkey
Example code for creating a 2D platform game in Java.
An advanced flexible game engine for Java.
Create your own animated characters for games with ease!
Open Source Virtual World and MMOG Development Platform
An extensible development framework for roleplay games.
SDK for Resident Evil Games
AMOS BASIC reimplementation in Java