Microsoft Flight Simulator (v1.0) (0)

In 1982 Microsoft published their in-house port of Flight Simulator, originally developed by subLOGIC, to the IBM PC. Renamed Microsoft Flight Simulator 1.0 it had an upgraded graphics engine as well as the addition of weather effects and a day/night cycle.
A slightly improved version was released in 1983 as Microsoft Flight Simulator 1.05.