Sonic Adventure, Sonic Wiki Zone

Not to be confused with Sonic Adventures. 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. It is the first Sonic game on a sixth generation console. The game was released in late 1998 in Japan for the Dreamcast. 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 Intānashona

Green Hill Zone - SmashWiki, the Super Smash Bros. wiki

Casinopolis, Sonic Wiki Zone

Silver Sonic - Sonic Wiki - Neoseeker

Sonic Adventure: Limited Edition, Sonic Wiki Zone

Angel Island - Sonic Wiki - Neoseeker

Metal Sonic, Sonic Wiki Zone

Lava Reef Zone - Sonic Wiki - Neoseeker

Special Zone (Sonic 3 & Knuckles) - Sonic Wiki - Neoseeker

Sonic Adventure Music Experience, Sonic Wiki Zone

Sonic Adventure DX: Director's Cut, Sonic Wiki Zone