Defunct first-party. 1  Aces Studio â Microsoft Flight Simulator series. 2  Digital Anvil â Brute Force, Freelancer. 3  Ensemble Studios â Age of Empires series, Halo Wars. 4  FASA Studio â MechWarrior series, Shadowrun. 5  Hired Gun â Halo 2 for Windows Vista. 6  Lionhead Studios â Fable series, Black & White series.
The term meridiangenerally refers to any line that runs pole to pole, on the surface of a sphere. Figure 2a (left): The Earth's coordinate system, latitude and longitude. The central axis runs through the North and South poles. Figure 2b (right): The pole-to-pole lines along the surface are lines of longitude.
1 The Equator is the 0 point of latitude. 2  Latitude lines North of the Equator are referred to as North latitude; latitude lines South of the Equator are referred to as South latitude. 3  The lines that run up and down on the grid -- the tall lines -- are lines of longitude. 4  The lines of longitude are also called meridians.