United Game Artists was a development subsidiary of Sega created with members from an in-house Division. After developing 3 game It was merged with another subsidiary, Sonic Team, in 2003.

Soon after this change the company president, Tetsuya Mizuguchi, and other United Game Artists staff left Sega to form their own company, Q Entertainment.

Sonic Team was later reorganized back into an internal Sega R&D Division structure after Sega's merger with Sammy in 2004.