libgdx - Desktop/Android/HTML5/iOS Java game development framework

Libgdx is a Java game development framework that provides a unified API that works across all supported platforms. The framework provides an environment for rapid prototyping and fast iterations. Instead of deploying to Android/iOS/Javascript after each code change, you can run and debug your game on the desktop, natively. Desktop JVM features like code hotswapping reduce your iteration times considerably.