The specialist of the ATC games mixing both fun and simulation is Big Fat Simulations, author of Radar Chaos and Airport Madness series.
Their new Radar Chaos : World Edition arrived at simMarket, and you can manage airspaces with improved graphics, and six new sectors : San Francisco, LAX, Las Vegas, Hong Kong, Heathrow and Rio De Janeiro.
As promised, Airport Madness : World Edition, offering a Tower control simulation from a top view, is giving away monthly free updates with new aiports added at no cost. Anchorage in Alaska is the free Christmas gift to registered customers. If you have a Facebook account, a Free demo can be accessed here.