Flight Simulator was sold by subLOGIC until 1978.
One of the primary home flight simulator systems, this game program caters to pilots, future pilots and people who once dreamed of being pilots alike. What has to be remembered is that this is a simulation, not a game. It can often be frustrating, complex and difficult due to its realism, but it can be rewarding for the skilled flightsimmer at the same time.
Microsoft has consistenly produced newer versions of the simulation, adding features such as new airplane types and new cities to it. Since their 2000 version, Microsoft has added a more expensive "professional edition", which has access to more airplanes, tools and better scenery than the regular version.
A number of websites are dedicated to providing users with add-on files (such as airplanes from real airlines, airport utility cars, real buildings located in specific cities, textures, and city files).