Sega AM1

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Sega AM Research & Development No. 1
Native name
Sega Daiichi Ē Emu Kenkyū Kaihatsu Bu
IndustryVideo games
FateMerged with Sega's Research and Development
FoundedApril 12, 2000; 19 years ago (2000-04-12)
FounderRikiya Nakagawa
Noriyoshi Ohba
DefunctJuly 1, 2004; 15 years ago (2004-07-01)
OwnerSega Edit this on Wikidata

Sega AM Research & Development No. 1 (セガ第一AM研究開発本部, Sega Daiichi Ē Emu Kenkyū Kaihatsu Bu), originally titled Sega CS Research & Development No. 2 (セガ第二CS研究開発部, Sega Daini Shī Esu Kenkyū Kaihatsu Bu), and later Overworks Ltd. (株式会社オーバーワークス, Kabushiki gaisha Ōbāwākusu) and Sega Wow Inc. (株式会社セガワウ, Kabushiki gaisha Sega Wau), was a division of Japanese video game developer Sega.


The logo of the division under the Sega Wow branding.

In 2000 all of Sega's in-house Consumer Software (CS) and Amusement Machine (AM) R&D departments were separated from the main company and established on 9 semi-autonomous subsidiaries, with each subsidiary getting an elected president as a studio head.[1] However, for more financial stability, Sega began consolidating its studios into six main ones (Sega Wow, Sega AM2, Hitmaker, Amusement Vision, Smilebit, Sonic Team) and merged them back into a uniform R&D structure in 2004.

WOW Entertainment was headed by Rikiya Nakagawa and Kazunari Tsukamoto. In addition to a continued arcade line-up, WOW Entertainment made efforts on the consumer market with the SEGA GT racing series, an effort to compete against Sony's Gran Turismo. They also made efforts on the Game Boy Advance.

Overworks was formed from CS2, and headed by Noriyoshi Ohba. Out of the gate it came out with Skies of Arcadia for Dreamcast and GameCube, and also continued the Sakura Taisen series. In 2002, it came with the Shinobi reboot on PlayStation 2.

In 2003 it was renamed to SEGA WOW and absorbed Overworks. The line-up of action games Blood Will Tell, Nightshade and the Sakura Wars series became part of SEGA WOW. By 2004, Sega Wow had 215 employees which were split across consumer and arcade development after the integration back into Sega.[2] In 2005, during Sega's restructuring into Sega Sammy Holdings, Sega Wow was absorbed and renamed Sega AM1; the new division, which included staff from Sega AM3 and Sega Wow, focused on the development of arcade titles, with later extensions into mobile games.[3][4]

List of games[edit]

Sega Wow[edit]

PlayStation 2
Game Boy Advance
  • Lilliput Oukoku: Lillimoni to Issho Puni! (2004)


  1. ^ "Sega Corporation Annual Report 2000" (PDF). Retrieved 2015-05-17.
  2. ^ "Notice on Reorganization of the Company's R&D Subsidiaries" (PDF). Archived from the original (PDF) on January 10, 2018. Retrieved 2015-06-28.
  3. ^ "Part-time Jobs-News Releases-Company Information - SEGA". 18 February 2013. Archived from the original on 18 February 2013.CS1 maint: BOT: original-url status unknown (link)
  4. ^ 株式会社インプレス (2013-07-04). "Sega Networks, iOS / Android "Chain Chronicle" the official announcement". GAME Watch (in Japanese). Retrieved 2020-03-27.