While Sega became well-known in the 1990’s as a Japanese company that made the Sega Genesis console (Mega-Drive outside the USA) and the Sonic the Hedgehog series, Sega originated as an American company called Standard Games based first in Hawaii in 1940. Their first games were really slot machines for the U.S. military which eventually moved to being based in Japan and the name changed to Service Games which Sega get its name from.