As a core simulator released in 1989 for DOS, Microsoft Flight Simulator 4.0 challenges you to pilot aircraft over detailed scenery covering five major US cities. The gameplay loop centers on realistic flight control, navigation, and managing aircraft systems. Distinctive features of this version included support for multi-user play and compatibility with add-ons like the Aircraft & Scenery Designer, expanding the simulation environment.
The simulation places the user in the cockpit, demanding attention to flight dynamics and environmental factors. While the game does not feature a traditional narrative or storyline, its setting is grounded in recreating recognizable real-world geography for flight practice and exploration.
A key feature of this version includes detailed scenery packages covering five major metropolitan areas: New York, Seattle, San Francisco, Los Angeles, and Chicago. These locations serve as the primary operational theaters for the simulation.
This iteration of the simulation offered support for a range of display standards available at the time, including CGA through VGA resolutions (rendered in EGA mode). A notable advancement for its era was the inclusion of multi-user play capabilities, allowing for shared experiences within the simulation environment.
The simulation supported integration with specific add-on content released by the publisher and associated third parties. This included the official Aircraft & Scenery Designer tool, which allowed users to create custom content, as well as additional scenery packages from Sublogic's USA series, expanding the navigable world beyond the default five cities.
The base game has two officially recognized downloadable content (DLC) packages available, which primarily focus on expanding the available aircraft or geographical areas for simulation.
There are no officially released expansions or remakes associated with this specific 1989 version.

This is an addon for Microsoft Flight Simulator 4.0 which includes: - Four new aircraft types: Concorde SST, P-51D, Laird Turner Meteor Racer and Spectrum Beaver RX 550 Ultralight. - New sound and speech (for control tower and flight instructor). - Higher resolution graphics and instrument panel detail.

This addon allows to personalise your flying experience with scenery you create. Also includes four new planes - a Boeing 747-400, Piper Archer, Beechcraft Starship, and seaplane.