Toshihiro Nagoshi graduated with a degree in movie production and joined Sega shortly thereafter, working for the second arcade department (AM2) at Sega under Yu Suzuki as a CG designer. His first title was Virtua Racing as a chief designer, and afterwards he would create his own racing game, Daytona USA, where he was producer, director and chief designer. Then, he would create more arcade racing games with Scud Race in 1996 and Daytona USA 2 in 1998. By 1998, Nagoshi had his own arcade department, where he worked on SpikeOut.
In 2000, Sega separated its in-house R&D departments from the main company and established them on 9 semi-autonomous subsidiaries, with each subsidiary getting an elected president as a studio head. Toshihirio Nagoshi became head of Amusement Vision, where he further contributed to Sega's arcade line-up with Planet Harriers, SpikeOut sequels and spin-offs. For the Dreamcast he remade his very first game, Daytona USA, on the Dreamcast, as Daytona USA 2001. As Sega became a third-party, he moved out of arcade development. Amusement Vision became most known for its for work on the Nintendo GameCube, with the first two Super Monkey Ball titles in 2001 and 2002, and F-Zero GXin 2003, which Nagoshi made in conjunction with Shigeru Miyamoto. During the time of development of F-Zero GX, Nagoshi wrote a regular column in Edge, which was entitled "AV Out" in reference to both Amusement Vision's initials, which was the name of his development division, and the consumer electronics term "A/V".
In 2003, major changes took place at Sega, consolidating much of their studios, and Nagoshi was appointed to the group of the company's officers. In 2005, he was in charge of the New Entertainment Division at Sega, which housed both his prior team, with the addition of staff that worked on Jet Set Radio, Panzer Dragoon Orta and GunValkyrie, that already produced the Ollie King arcade release at Amusement Vision. It was then when Nagoshi launched his Yakuza franchise, with the first title costing 21 million dollars to produce, and the first PlayStation 3 entry, Ryū ga Gotoku Kenzan! being even more expensive, with Nagoshi stating that it his biggest production since he started working on consumer games. By 2009, New Entertainment diminished, and Nagoshi became the R&D Creative Officer of Sega of Japan's Consumer Division. In February 2012 it was announced that Toshihiro Nagoshi would be promoted to the role of Chief Creative Officer at Sega of Japan, as well as being appointed to the company's board of directors. He took up these positions starting April 1, 2012.
- Daytona USA series
- Scud Race
- Planet Harriers
- Super Monkey Ball series
- F-Zero GX/AX
- Yakuza series
- Binary Domain
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- "Interview, mention of degree in movie production".
- "Career descrption".
- (PDF) http://segaretro.org/images/e/e5/AnnualReport2003_English.pdf. Missing or empty
- "Yakuza producer brings two games to PS3". Engadget. Retrieved 2015-04-21.
- "Profile: Toshihiro Nagoshi - Interview". spong.com. Retrieved 2015-04-21.
- Brown, Nathan (29 February 2012). "Nagoshi promoted in Sega reshuffle". Edge. Future plc. Retrieved 3 March 2012.
- Sega Sammy Group (February 29, 2012). "Notice of Personnel Changes at SEGA SAMMY HOLDINGS INC. and its Subsidiaries (SEGA CORPORATION, Sammy Corporation and Sammy NetWorks Co., Ltd.)" (PDF). Retrieved 3 March 2012.
- Tohishiro Nagoshi Interview Summer 2006
- July 2004 Kikizo Games Interview
- October 2005 Kikizo Games Interview
- December 2004 Got-Next Interview
- Official blog (Japanese)