Microsoft's first foray into combat flight sims is a class act. This sim combines the famous attention to detail seen in Microsoft Flight Simulator 98 with photo-realistic scenery generation and challenging missions. The missions are full of action and the photo-realistic scenery adds to the adrenaline rush whether you're in a dogfight at 5,000 feet or strafing a train at 50 feet! By designing an open architecture sim Microsoft have encouraged 3rd party developers and there are already custom aircraft and missions proliferating on the net.