Sonic Adventure 2

Sonic Adventure 2 was made by Sonic Team USA. The game was originally made for the Dreamcast. But the game later got ported to GameCube. The GameCube version was called Sonic Adventure 2 Battle. This was the last Sonic game to be released on the Dreamcast. Sonic Adventure 2 Battle was also ported to the PC, Xbox 360, and Playstaion 3.

Gameplay
The gameplay focuses on three modes with both Team Hero and Team Dark following these modes. Sonic and Shadow focus on the basic mode where they must reach the goal with their super speed, while dodging obstacles and defeating enemies along the way.

Knuckles and Rouge's mode is a treasure hunt mode where they both must find three pieces of an object or three objects. While Rouge's mode focuses on finding various objects throughout the game, the majority of Knuckles' stages have him search for pieces of the Master Emerald.

Tails and Dr. Eggman's stages involve them slowly making their way towards the goal in their own mecha suits by destroying enemies, going up platforms and many various things that are new to the Sonic franchise.

Knuckles Stages

 * Find three pieces of the Master Emerald
 * Collect 100 rings
 * Find the lost Chao
 * Find the Master Emerald pieces within time limit.
 * Hard mode

Playable Characters

 * Sonic
 * Tails
 * Knuckles
 * Dr. Eggman
 * Amy Rose (not playable in 1p mode)
 * Big The Cat (In Dreamcast Version/Cameo in SA2B version)
 * Metal Sonic (2p only)
 * Tikal (2p only only)
 * Chao Walker (2p only)
 * Dark Chao Walker (2p only)
 * Chaos (2p only)
 * Shadow The Hedgehog (1st Appearance)
 * Rouge The Bat (1st Appearance)

Non-playable Characters

 * Chao
 * Hero Chao (1st appearance)
 * Dark Chao (1st appearance)
 * Omochao (1st appearance)
 * Maria Robotnik (1st appearance)
 * President (1st appearance)

Hero

 * 1) City Escape
 * 2) Wild Canyon
 * 3) Prison Lane
 * 4) Metal Harbor
 * 5) Green Forest
 * 6) Pumpkin Hill
 * 7) Mission Street
 * 8) Aquatic Mine
 * 9) Route 101
 * 10) Hidden Base
 * 11) Pyramid Cave
 * 12) Death Chamber
 * 13) Eternal Engine
 * 14) Meteor Herd
 * 15) Crazy Gadget
 * 16) Final Rush

Dark

 * 1) Iron Gate
 * 2) Dry Lagoon
 * 3) Sand Ocean
 * 4) Radical Highway
 * 5) Egg Quarters
 * 6) Lost Colony
 * 7) Weapons Bed
 * 8) Security Hall
 * 9) White Jungle
 * 10) Route 280
 * 11) Sky Rail
 * 12) Mad Space
 * 13) Cosmic Wall
 * 14) Final Chase

Last

 * Cannon's Core

Extra

 * Chao World
 * Green Hill [only by collecting enough emblems]

Bosses

 * F-6t Big Foot
 * Dr. Eggman
 * Shadow
 * King Boom Boo
 * Egg Golem
 * Rouge
 * B-3x Hot Shot
 * Tails
 * R-1/A Flying Dog
 * Sonic
 * Knuckles
 * Biolizard

Unused Voices
Sonic Adventure 2/Unused Voices

Version Differences

 * Unlike the Dreamcasst version the where you need all 180 emblems to unlock everthing in the mutiplayer. In the Battle version you have all of the characters without having to get all the emblems. In the Battle version there are some new features.
 * In the Battle version in the level Crazy Gadget there are Red X's, but in the Dreamcast verion the X's are green.
 * In the Battle version some effects were changed/added.
 * In the GameCube version of Sonic Adventure 2 Battle Big's cameos were removed. But in the other versions of Battle and in the Dreamcast version it is there.
 * In Chao World, Tails and Dr. Eggman don't use their mechs while inside Chao World.