To know more about AppWarp http://appwarp.shephertz.com/game-development-center/
The tutorial uses the excellent single player superjumper sample from https://github.com/libgdx/libgdx/tree/master/demos/superjumper and extends it to a 2 player realtime game.

The complete tutorial is available on http://appwarp.shephertz.com/game-development-center/java-multiplayer-libgdx-tutorial with source code and step by step integration guide. The AppWarp concepts illustrated are dynamic game rooms, lock properties and our TCP/UDP sendUpdate APIs.
video http://www.youtube.com/watch?v=eq0WQ4kU_VQ
Download superjumper executable jar http://appwarp.shephertz.com/wp-content/themes/twentytwelve/Demo/superjumper.jar
