Trivia
This is the only Sonic game to feature Sonic wearing Soap shoes to promote the product. This new product actually helped introduce the grinding technique that has been used in every 3D Sonic game since Sonic Adventure 2, due to a partnership between Sonic Team and Soap to help promote the shoes. There are also billboards in the game that advertise the product. However, due to the company not producing any more shoes, the partnership didn't last long. Thus, Sonic doesn't feature his Soap shoes in any of the future Sonic games after Sonic Adventure 2.
This was the first game the San Francisco based Sonic Team USA developed. Some of the levels in the game even resemble famous landmarks of the city, such as the Golden Gate Bridge and downhill roads of the city.
The game was released exactly ten years after the original Sonic the Hedgehog, and to celebrate that, a special version of Sonic Adventure 2 was available in Japan.
Contributed by
Sciere 
(118016) on Mar 05, 2006.
Sonic Adventure 2 is the first game in the Sonic the Hedgehog series to allow the player to play through the whole game as Dr. Robotnik/Eggman and try to take over the world. The game also introduces 2 new characters, Shadow the Hedgehog and Rouge the Bat, both on the "Dark" side.
Contributed by
Spindash (90) on Apr 17, 2004.
It seems that starting with Sonic Adventure, Sega started to abandon the American name of the game's antagonist, Dr. Robotnik, instead opting to use his original Japanese moniker, Dr. Eggman. However, in Sonic Adventure 2, the name Dr. Robotnik has been completely dropped; he's now called Dr. Eggman by the entire cast of the game, and in following games in the Sonic series as well.
