This page details one or more prototype versions of Sonic Adventure 2 (Dreamcast).
Several prototypes of Sonic Adventure 2 have been uncovered over the years. Most of them are demo builds that were sent out in the buildup to release; two are of the full game, but come quite late in development.
Sub-Pages
| The Trial
A demo from late 2000 that was shipped with copies of Phantasy Star Online. Sonic doesn't even have the Soap shoes in this version. |
| Preview
Dated March 18, 2001. This is similar to the Preview build sent to the press. It contains a very incomplete English voice track, among other things. |
| Trial Version
Dated May 3, 2001. Much closer to the final, but still manages to show some changes. |
| May 7, 2001 Prototype
Dated May 7, 2001. This is the earliest full prototype, with a surprising amount of minor differences and some HUGE amounts of debugging material. |
| Review
Dated May 21, 2001. A European version that was sent to the press for reviews, still managing to show minor changes. |
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| Sega Genesis | Sonic the Hedgehog (Prototype) • Sonic the Hedgehog 2 (Prototypes) • Sonic the Hedgehog 3 (Prototype) • Sonic & Knuckles (Prototypes) • Sonic 3 & Knuckles • Sonic 3D Blast (Prototypes) |
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| Sega Master System | Sonic the Hedgehog • Sonic the Hedgehog 2 • Sonic Chaos (Prototypes) • Sonic Blast |
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| Game Gear | Sonic the Hedgehog (Prototype) • Sonic the Hedgehog 2 (Prototype) • Sonic Chaos (Prototypes) • Sonic Triple Trouble (Prototypes) • Sonic Labyrinth • Sonic Blast (Prototypes) |
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| Arcade | SegaSonic the Hedgehog (Prototype) |
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| Sega CD | Sonic the Hedgehog CD (Prototypes) |
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| 32X | Knuckles' Chaotix (Prototypes) |
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| Windows | Sonic the Hedgehog CD (1996, 2011) • Sonic 3D Blast • Sonic Heroes • Sonic Adventure DX: Director's Cut (2004, Demo, 2011) • Sonic Adventure 2 • Sonic the Hedgehog 4: Episode I (Prototypes) • Sonic the Hedgehog 4: Episode II (Prototype) • Sonic Generations (Demos) • Sonic Lost World • Sonic Mania • Sonic Forces • Sonic Colors: Ultimate • Sonic Frontiers |
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| Sega Saturn | Sonic X-treme • Sonic 3D Blast (Prototype) |
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| Dreamcast | Sonic Adventure (Prototypes) • Sonic Adventure 2 (Prototypes) |
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| Neo Geo Pocket Color | Sonic the Hedgehog Pocket Adventure (Prototypes) |
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| GameCube | Sonic Adventure 2: Battle (Demo) • Sonic Adventure DX: Director's Cut (Prototypes) • Sonic Heroes (Prototypes) • Shadow the Hedgehog |
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| Game Boy Advance | Sonic Advance (Prototype) • Sonic Advance 2 (Prototype) • Sonic Advance 3 (Prototype) • Sonic the Hedgehog Genesis |
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| PlayStation 2 | Sonic Heroes • Shadow the Hedgehog • Sonic Unleashed |
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| Xbox | Sonic Heroes • Shadow the Hedgehog |
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| Nintendo DS | Sonic Rush (Demo) • Sonic Rush Adventure |
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| Xbox 360 | Sonic the Hedgehog (Demo) • Sonic Unleashed (Preview) • Sonic the Hedgehog 4: Episode I (Prototypes) • Sonic Generations (Demos) • Sonic Adventure DX • Sonic Adventure 2 |
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| Wii | Sonic Unleashed • Sonic Colors • Sonic the Hedgehog 4: Episode I (Prototypes) • Sonic and the Secret Rings • Sonic and the Black Knight |
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| PlayStation 3 | Sonic the Hedgehog • Sonic Unleashed • Sonic the Hedgehog 4: Episode I (Prototypes) • Sonic Adventure DX • Sonic Adventure 2 • Sonic Generations (Demos) • Sonic the Hedgehog CD (2011) |
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| Nintendo 3DS | Sonic Generations • Sonic Lost World |
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| Wii U | Sonic Lost World |
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| PlayStation 4, Xbox One, Nintendo Switch | Sonic Mania • Sonic Colors: Ultimate • Sonic Frontiers |
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| PlayStation 5, Xbox Series X | Sonic Origins • Sonic Frontiers |
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| J2ME | Sonic the Hedgehog Mobile |
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| N-Gage | Sonic N |
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| iOS, Android | Sonic the Hedgehog 4: Episode I (Prototypes) • Sonic the Hedgehog • Sonic the Hedgehog 2 • Sonic the Hedgehog CD |
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| Racing Games |
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| Game Gear | Sonic Drift • Sonic Drift 2 |
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| Windows | Sonic R • Sonic Riders • Sonic & SEGA All-Stars Racing • Sonic & All-Stars Racing Transformed • Team Sonic Racing |
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| Sega Saturn | Sonic R (Preview) |
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| PlayStation 2 | Sonic Riders • Sonic Riders: Zero Gravity |
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| PlayStation 3, Wii U | Sonic & All-Stars Racing Transformed |
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| GameCube, Xbox | Sonic Riders |
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| Nintendo DS | Sonic & SEGA All-Stars Racing |
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| PlayStation Portable | Sonic Rivals • Sonic Rivals 2 |
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| Xbox 360 | Sonic & SEGA All-Stars Racing • Sonic & All-Stars Racing Transformed |
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| Wii | Sonic & SEGA All-Stars Racing • Sonic Riders: Zero Gravity |
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| Nintendo 3DS | Sonic & All-Stars Racing Transformed |
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| Adobe Flash | Sonic Rivals Dash |
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| Sports/Fighting Games |
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| Sega Genesis | Sonic the Hedgehog Spinball (Prototypes) |
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| Sega Master System | Sonic Spinball |
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| Game Gear | Sonic Spinball (Prototypes) |
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| Arcade | Sonic Championship |
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| Game Boy Advance | Sonic Battle |
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| Nintendo DS | Mario & Sonic at the Olympic Games • Mario & Sonic at the Olympic Winter Games |
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| Wii | Mario & Sonic at the Olympic Games • Mario & Sonic at the Olympic Winter Games • Mario & Sonic at the London 2012 Olympic Games |
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| Nintendo 3DS | Mario & Sonic at the London 2012 Olympic Games |
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| Wii U | Mario & Sonic at the Rio 2016 Olympic Games |
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| J2ME | Sonic at the Olympic Games |
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| Puzzle Games |
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| Sega Genesis | Sonic Eraser • Dr. Robotnik's Mean Bean Machine (Prototypes) |
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| Sega Master System, Game Gear | Dr. Robotnik's Mean Bean Machine |
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| Arcade | SegaSonic Bros. |
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| Adobe Flash | Sonic Jigsaw 2 |
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| Educational Games |
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| Arcade | SegaSonic Cosmo Fighter |
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| Sega Master System | Sonic's Edusoft |
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| Windows | Sonic's Schoolhouse |
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| Sega Pico | Sonic the Hedgehog's Gameworld (Prototypes) • Tails and the Music Maker (Prototypes) |
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| Leapster | Sonic X |
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| LeapFrog Didj | Sonic the Hedgehog |
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| Sonic Boom |
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| Wii U | Rise of Lyric |
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| Nintendo 3DS | Shattered Crystal • Fire & Ice |
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| Adobe Flash | Link 'n Smash |
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| Compilations |
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| Sega Genesis | Sonic Classics |
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| Sega Saturn | Sonic Jam (Demo) |
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| Windows | Sonic & Knuckles Collection • Sonic Mega Collection Plus • Sonic Origins |
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| GameCube | Sonic Mega Collection (Prototype) • Sonic Gems Collection |
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| PlayStation 2 | Sonic Mega Collection Plus • Sonic Gems Collection |
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| Xbox | Sonic Mega Collection Plus |
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| Nintendo DS | Sonic Classic Collection |
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| Xbox One, Xbox Series X, PlayStation 4, PlayStation 5, Nintendo Switch | Sonic Origins |
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| Game.com | Sonic Jam |
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| Plug & Play | Super Sonic Gold |
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| Other |
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| Game Gear | Tails' Skypatrol • Tails Adventures |
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| Dreamcast | Sonic Shuffle (Debug Version) |
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| Nintendo DS | Sonic Chronicles: The Dark Brotherhood |
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| Windows, Mac OS X | The Murder of Sonic the Hedgehog |
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| J2ME | Sonic Jump |
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| iOS, Android | Sonic Jump • Sonic Dash • Sonic Runners • Sonic Runners Adventure (Prototype) |
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| Adobe Flash | Sonic The Broad Jump • Sonic and the Black Knight: Knight in Training |
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