Microsoft Flight Simulator X: Steam Edition - Ultimate Night Environment X

Summary pulled directly from Steam - Some text may only be applicable to Steam platform

Ultimate Night Environment X is a comprehensive texture package that features over 300 new night textures that greatly enhance the lighting of all cities and towns throughout the world in FSX: Steam Edition. Cities, towns, and airports worldwide come alive at night with enhanced and detailed night textures.

Best of all, frame rate friendly! Therefore, you can rest assured that it will not affect performance in any way.

Features:

Over 300+ new night textures bring all cities and towns throughout the world to life.
New added lighting to buildings in Europe and Africa that had no lighting before.
Enhanced night lighting for Highways, Freeways and Roadways.
Enhanced night lighting for vehicles and traffic
Enhanced night lighting for auto-gen buildings around the world
Frame rate friendly.