PowerMonger, by Peter Molyneux’s Bullfrog Productions, was originally released for the Amiga and Atari ST computers in 1990. It was their follow-up to the blockbuster Populous, which helped to define the concept of the God Game. PowerMonger, however, brought things down from heavenly perspective to the earthly confines of battling warlords.
The Sega CD version featured in this WePlay video was released in 1994. The nifty polygonal graphics engine of the original is retained, with some added cinematics and landscape fly-bys. Watch Bill take you through three islands in the game here: