A peaceful echidna named Tikal, daughter of Chief Pachacamac, befriended the Chao that lived at the altar and their protector, who was the water god Chaos. Three thousand years ago, the Chaos Emeralds and the Master Emerald were both kept at an altar near the territory of a clan of echidnas, specifically the Knuckles Clan. Sonic & All-Stars Racing Transformed Review 14.4.1 Christmas Trees in Station Square.It received a sequel in 2001, marking the 10th anniversary of the Sonic the Hedgehog series.

Sonic Adventure sold over 1.27 million copies in the United States alone, making it the top selling Dreamcast game. Along the way, their old friends Knuckles and Amy, as well as E-102 Gamma, a robot aligned to the doctor, and Big the Cat, who has lost his friend Froggy get involved in the skirmish as well and learn of Chaos' past through mysterious visions. To prevent their nemesis from achieving this goal, Sonic and Tails embark on an adventure to secure the seven Chaos Emeralds. Robotnik has discovered the mighty monster known as Chaos, whom he plans to use to destroy Station Square and build Robotnikland on its ruins. An updated edition was later released in the second half of 1999 worldwide, under the name of Sonic Adventure International ( ソニックアドベンチャーインターナショナル, Sonikku Adobenchā Intānashonaru ?) in Japan. The game was released in late 1998 in Japan for the Dreamcast. It is the first Sonic game on a sixth generation console. Sonic Adventure ( ソニックアドベンチャー, Sonikku Adobenchā ?) is a 3D platformer video game in the Sonic the Hedgehog series developed by Sonic Team and published by Sega.

Sonic adventure generations model