With its "Sonic Jam" experiments, Sonic Team began developing a 3D "Sonic" platformer for the Saturn. The project stemmed from a proposal by Iizuka to develop a "Sonic" role-playing video game (RPG) with an emphasis on storytelling. Development moved to Sega's new console, the Dreamcast, which Naka believed would allow for the ultimate "Sonic" game. "Sonic Adventure", directed by Iizuka and released in 1998, was one of the first sixth-generation video games. It introduced elements that became series staples, such as artist Yuji Uekawa's new character designs influenced by comics and animation. In 1999, Iizuka and 11 other Sonic Team members relocated to San Francisco and established Sonic Team USA. Sonic Team USA developed the more action-oriented "Sonic Adventure 2" (2001). Before the release, Ohshima left Sega to form Artoon. While both "Adventure" games were well received and the first sold over two million copies, consumer interest in the Dreamcast quickly faded, and Sega's attempts to spur sales through lower prices and cash rebates caused escalating financial losses.