Gideros Release version
Arianne is an engine to develop multiplayer online games like Stendhal
Game engine supporting many 3D/2D formats and graphic effects
Java Settlers
Source code of the chapters of the book 3D Game Development with LWJGL
Portable game engine with main focus on point-and-click adventures
Build Cross-platform Applications
An advanced flexible game engine for Java.
Single-/multi-player card game Mau Mau (similar to UNO®)
Java decentralized cross-platform network multiplayer game engine
Java Gamepad API for multiple platforms
A multiplatform game engine for interactive fiction experiences
3D game engine for C and C++
Pear3DEngine is a modern and modular 3D development framework
DiaT is a Textadventure
AMOS BASIC reimplementation in Java
A 2D Java game engine