Microsoft Flight Simulator X, also known as FSX, is the 10th version of Microsoft Flight Simulator after Microsoft Flight Simulator 2004. It includes a graphics engine upgrade as well as compatibility with Windows Vista, having been marketed by Microsoft as the most important technological milestone in the series to date. It is the first version in the flight simulator series to be released on DVD-ROM. It is also the first version in the series to feature a new type of electronic distribution prevention using license keys, removing the need for the user to insert the game disc into their computer in order to run the software.
Flight Simulator X marks the tenth version of the popular line of flight simulators. It was officially released to the US market on October 17, 2006. According to Microsoft's Web site for the game, a standard edition features everything from navaids to GPS and airways. It also includes 18 planes, 28 detailed cities, and over 24,000 airports with a deluxe version featuring 24 aircraft, and 38 cities.
Flight Simulator X was officially unveiled at the 2006 International Consumer Electronics Show (CES) as a gaming showcase for Microsoft Windows Vista and is now also compatible with Windows 7. Microsoft released screenshots as well as a list of frequently asked questions as a press release on Microsoft Flight Simulator Insider, and numerous flight simulator communities. This also included mission-based gameplay with mission specific aircraft as well as an upgraded rendering engine capable of increased detail. Following the Electronic Entertainment Expo (E3) in May 2006, Microsoft published new screenshots, videos and an official trailer. The overall reaction by the community was quite positive, and the graphical quality of the simulator has greatly increased.