Empire - Wargame of the century is a strategy game that moved from text based minis, to PCs, and to Modern GUI, and on to phones.
Empire, a war/geopolitical/economic/strategy game played via the InterNet or on local hosts, using a client/server protocol. For more info on what EMPIRE is see the WhatIsEmpire-FAQ.txt file found on the Archive.
THE WARGAME OF THE CENTURY Version 4.0 EMPIRE is a simulation of a full-scale war between two emperors, the computer and you. Naturally, there is only room for one, so the object of the game is to destroy the other. the computer plays by the same rules that you do.
The map is a rectangle 600*1000 miles on a side. The resolution is 10, so the map you see is 60*100. The map consists of sea='.', land='+', Uncontrolled cities='*', Computer-controlled cities='X', and Your dominated cities='O'. Each emperor gets 1 move per round (1 round=1 day), moves are done sequentially.
Empire was first ported to the PC from sources of a rewrite in 'C' called v1.42
Simultaneously, a port was released in Florida, v4.9 Followed by 5.0, and 5.1, supporting color.
Source links for Fortran, and C, and a PC Binary of v1.42