From The Cutting Room Floor

Sonic Adventure 2: Battle
Developer: Sonic Team USA Publisher: Sega Platform: GameCube Released in JP: December 20, 2001 Released in US: February 11, 2002 Released in EU: May 3, 2002 This game has unused areas. This game has debugging material.

Sonic Adventure 2: Battle was the first Sonic game for the GameCube, as well as the first official Sonic game on a Nintendo console. A port of Sonic Adventure 2, it stayed true to its predecessor while providing new features such as two-player mode and, for the most part, upgraded graphics.

Test Level

Using the (NTSC) Action Replay code 80U8-7RHQ-W728R H2E9-MAE2-U5PEE, one can access a test level. It contains several features including slope tests, pits, doorway/roll tests, an interactive test object, and a grinding rail.

Test Level

Debug Mode

The (NTSC) Action Replay code 9E7F-943M-6ACEJ QTG9-MTTU-ABNMK lets you access a debug mode that, when triggered, displays debug info on the bottom portion of the screen.

Playable Super Sonic and Super Shadow in 2P Mode

At some point during development, Sonic and Shadow in their super forms were going to be either be alternate switched forms (like the unlockable skins) or treated as separate selectable characters for 2P Mode. Images for their names written in the stylized font are still in the disc and both use the description of "Powered by the 7 Chaos Emeralds. Amazing speed and moves but dies if rings are lost".

For some reason (yet again), they were pulled from the game.

The Sonic the Hedgehog series
Sega Genesis	Sonic the Hedgehog • Sonic the Hedgehog 2 (Prototypes) • Sonic the Hedgehog 3 • Sonic & Knuckles (Prototypes) Sonic 3 & Knuckles • Sonic 3D Blast (Prototypes) • Sonic Spinball (Prototype) Dr. Robotnik's Mean Bean Machine • Sonic Classics
Master System	Sonic the Hedgehog • Sonic the Hedgehog 2 • Sonic's Edusoft • Sonic Spinball • Sonic Blast Dr. Robotnik's Mean Bean Machine
Game Gear	Sonic the Hedgehog • Sonic the Hedgehog 2 • Sonic Chaos • Sonic Triple Trouble • Sonic Blast • Sonic Spinball Dr. Robotnik's Mean Bean Machine • Tails' Sky Patrol • Tails Adventures
Arcade	SegaSonic the Hedgehog • Sonic the Fighters
Sega CD	Sonic CD (Prototypes‎)
32X	Knuckles' Chaotix (Prototypes)
PC	Sonic & Knuckles Collection • Sonic 3D Blast • Sonic CD (1996, 2011) Sonic the Hedgehog 4: Episode II • Sonic Generations • Sonic Adventure DX • Sonic Adventure 2 • Sonic Heroes
Saturn	Sonic Jam
Dreamcast	Sonic Adventure • Sonic Adventure 2
Neo Geo Pocket Color	Sonic Pocket Adventure
GameCube	Sonic Adventure 2: Battle • Sonic Heroes (Prototypes) • Shadow the Hedgehog Sonic Mega Collection • Sonic Gems Collection
Game Boy Advance	Sonic Advance • Sonic Advance 2 • Sonic Advance 3 • Sonic the Hedgehog Genesis
PlayStation 2	Sonic Heroes
Xbox	Sonic Heroes
Nintendo DS	Sonic Rush (Prototype) • Sonic Chronicles: The Dark Brotherhood Sonic & SEGA All-Stars Racing
Wii	Sonic Colors • Mario & Sonic at the Olympic Games (2007, London 2012)
Xbox 360	Sonic the Hedgehog • Sonic Unleashed • Sonic Generations (Prototypes) • Sonic Adventure 2
PlayStation 3	Sonic Adventure 2
PSP	Sonic Rivals
J2ME	Sonic the Hedgehog Mobile • Sonic Jump
iOS	Sonic the Hedgehog (2013) • Sonic CD Sonic Jump