This is absolutely the coolest time wasting activity of the month! If only it was truly 3 dimensional. Brings back old memories of playing CnC. Most of the setup was from 1 dimensional pictures on cardboard. Nonetheless its still pretty wicked. Oh and yes, its a real tesla coil.
More pictures and plans on how he set it all up.
http://tesladownunder.com/Red%20Alert%20Tesla.htm