Xbox Game Studios is an American video game publisher based in Redmond, Washington. It was established in March 2000, spun out from an internal Games Group, for the development and publishing of video games for Microsoft Windows. It has since expanded to include games and other interactive entertainment for the namesake Xbox platforms, other desktop operating systems, Windows Mobile and other mobile platforms, web-based portals, and other game consoles.

Microsoft Flight Simulator is a series of flight simulator programs for MS-DOS, Classic Mac OS and Microsoft Windows operating systems. It was an early product in the Microsoft application portfolio and differed significantly from Microsoft's other software, which was largely business-oriented. As of November 2022, Microsoft Flight Simulator is the longest-running software product line for Microsoft, predating Windows by three years. Microsoft Flight Simulator is one of the longest-running PC video game series of all time.