Amusement Vision, Ltd.

Sega CS R&D Dept. No. 1, doing business as RGG Studio (formerly known as Ryu Ga Gotoku Studio), is a Japanese video game developer and a division of Sega. It is known for developing the games in the Like a Dragon series, which the studio is named after since Yakuza 5, and the Super Monkey Ball series. The studio's origins can be traced back to Sega AM11 in 1998, which was renamed to R&D4 or AM4 in 1999. It was headed by Toshihiro Nagoshi, who joined Sega AM2 in 1989 and has been credited as the creator of the arcade games Daytona USA and Virtua Striker. Although Virtua Striker is attributed to another developer, Satoshi Mifune. Nagoshi requested his own development division during the development of Shenmue. In 2000, AM4 was re-established as Amusement Vision, where it was best known for Super Monkey Ball and F-Zero GX. Several structural changes occurred in the years that followed. During a reorganization in 2003, the non-sports staff of Smilebit merged with Amusement Vision, and a year later Sega merged with Sammy to form Sega Sammy Holdings. Amusement Vision became New Entertainment R&D Dept. and the first Like a Dragon game was released. Ryū ga Gotoku Kenzan! was the last Like a Dragon game to be developed under the New Entertainment R&D name. Since Yakuza 3, they were referred to as Sega's CS1 team, all the way up to Yakuza: Dead Souls.