Very pleased to be able to release this update today.  The changes to the UI radically change the strategy of the game by adding in some randomness in what you can build, as well as having an effect on what your opponent can build based on what you leave in the rail.  The AI has major upgrades as well regarding where it places turrets and beacons.  There are still a few bugs, such as if you try to change to the third level during the wave of an ongoing game, the camera gets all wonky.   The current selection of cubes tends to leave alot of spawner base cubes on the rack, when I add in the upgrade cubes, I will more closely adjust the chances of different cubes becoming available.  The camera for the Android still needs some work, the scrolling on it doesn't seem to like rotations, so I will just have to rebuild it so that it doesn't mind them so much.