Sega was founded by an american named David Rosen who saw how popular pinball machines were among soldiers on US military bases. He started a company called Service Games to import these pinball machines to US bases in japan. Eventually he bought out a Jutebox facotry and used it to start making arcade machines. SEGA was printed on the side of the machines because it was short for "SErvice GAmes" and Rosen liked it enough to make it the new name for the company. Eventually they started to release home console systems in japan and fianlly released the SEga Master System(SMS) worldwide(IT WAS OT THEIR FIRST SYSTEM!). Eventually the videogame market crashed and the US assets of Sega had to be sold off but in Japan Sega survived by being bought out by Japanese investors. After that Sega went on the Release the Genesis(also know as Mega Drive in places where Sega was actually popular). The Genesis was a hit because most people weren't willing to wait two more year for the SNES to be released. Sega then screwed up with every hardware item they released after that such as the Game Gear, Nomad, 32X, Sega CD, Saturn and Dreamcast.
Now Sega is sucking the dicks of every other company for money to pay off their seven years of debt.
Made in the 1960s by an American named David Rosen. The company started off as a successful photo boot company, bought out a Japanese jukebox company, and started making games in the 1970s. The company began making consoles in the 1980s, the most successful being the SEGA Genesis (1988), the SEGA Saturn (the Japanese version of course)(1994), and the SEGA Dreamcast(1998). After the surprising failure of the SEGA Dreamcast to pull the company out of its half-decade of debt from releasing poor quality consoles before the SEGA Saturn, SEGA sold itself out to Nintendo, Sony, and Microsoft.