Desktop/Android/HTML5/iOS Java game development framework
Arianne is an engine to develop multiplayer online games like Stendhal
Delphi Java - VRCalc++ OOSL (Script) and + (Binary Exec Distro)
Customizable and compatible open source server for Minecraft
8-bit Graphical API for Java
Programming Game, A Practice Tool for Building Intelligent Things
A software to craft easily your own Minecraft mod, without coding
AMOS BASIC reimplementation in Java