From Wikipedia
Flight simulation is an approximation, or simulation, of flight and various aspects of the flight environment. Flight simulation is used for a variety of reasons, including flight training and aircraft development. Flight simulations have varying degrees of detail and realism that depend largely on the purpose for which they are being used, and may range from simple generic cockpit replicas with minimal software modeling, to actual aircraft cockpits with wide-field visual systems mounted on large six degree of freedom (DOF) motion platforms that feature comprehensive flight and systems models.
From Wikipedia
A space flight simulator game is a genre of video games that lets players experience space flight in a spacecraft. Highly realistic examples include Orbiter and Microsoft Space Simulator.
Space flight simulators, at one time popular, have for most of the 2000s been considered a "dead" genre
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