Oyo Empire gunshots scared the Oyo cavalry horses and prevented their charging. Dahomey's army also built fortifications such as trenches, which forced the Oyo army to fight as infantry. The battle lasted four days, but the Yoruba were eventually victorious after reinforcements arrived. Dahomey was forced to pay tribute to Oyo. The Yoruba invaded Dahomey seven times before finally subjugating the small kingdom in 1748. With its cavalry, Oyo campaigned successfully in conquest and suppression over great distances. The Oyo army was able to attack defensive fortifications, but it was harder to supply an army, and they withdrew when supplies ran out.
Empire: Wargame of the Century interface. Starting around 1987, "Empire: Wargame of the Century" on the Atari ST, Amiga, Commodore 64, Apple II, Macintosh and DOS was produced. In its review of the game, "Computer Gaming World" noted the improved UI, saying "the playability of an already successful system has been significantly enhanced". The game would later receive the magazine's "Game of the Year" award for 1988; in 1989 the magazine named "Empire" to its Hall of Fame for games readers rated highly over time, with a final score of 9.71 out of 12, in 1990 readers voted for the game as their "All-Time Favorite",