Overworks (previously called AM7), is the Sega video game development group responsible for Skies of Arcadia, the Streets of Rage series, much of the Shinobi series, and Phantasy Star 1, 2, and 4. This article is about the video game company. ... Skies of Arcadia is a console role-playing game developed for the Sega Dreamcast by Overworks, a division of Sega. ... Streets of Rage (known in Japan as Bare Knuckle) was a popular beat em up series developed by Sega. ... Shinobi can refer to. ... Screenshot Phantasy Star on the Sega Master System In computer games, Phantasy Star (Japanese: ファンタシースター) is the most famous role-playing game series for Sega consoles, and has many incarnations including an online version. ...