Martin Bromley founded Sega on June 3 , 1960 .
Sega 's arcade division , once part of Sega Corporation , has existed as Sega Interactive Co. , Ltd. , also a Sega Holdings subsidiary , since 2015.The company was formed as in 1960 , which became known as Sega Enterprises , Ltd. after acquiring Rosen Enterprises , an importer of coin-operated games .
Sega