Prototypes
From Sega Retro
On rare occasions, incomplete versions of video games find their way to the general public. As these copies differ from their final counterparts, they can often provide an insight into the original vision of the game, before deadlines or technical or design restrictions led the development team down a different path.
This category covers prototype versions and release candidates of games made available to the public, both those which made it to retail, and those which did not.
Pages in category "Prototypes"
The following 200 pages are in this category, out of 342 total.
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- Mario & Sonic at the Rio 2016 Olympic Games (Wii U prototype; 2016-02-11)
- McDonald's Treasure Land Adventure (prototype)
- Metal Head (prototype; 1994-11-14)
- Metal Head (prototype; 1994-11-21)
- Mezase Pro Yakyuu (prototype; 1994-08)
- Michael Jackson's Moonwalker (Mega Drive prototype; 1990-04-24)
- Mickey Mania: The Timeless Adventures of Mickey Mouse (Mega Drive prototype; 1994-07)
- Mickey Mania: The Timeless Adventures of Mickey Mouse (Mega Drive prototype; 1994-09)
- Mickey Mania: The Timeless Adventures of Mickey Mouse (Mega-CD prototype; 1994-08-25)
- Mystic Defender (prototype; 1989-09-14)
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P
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- R.B.I. Baseball '95 (prototype)
- Rayman (prototype; 1995-07-20)
- Rayman 2: The Great Escape (prototype; 1999-11-22)
- The Ren & Stimpy Show Presents Stimpy's Invention (prototype)
- Ristar (Game Gear) (prototype; 1994-09-09)
- Ristar (Game Gear) (prototype; 1994-10-19)
- Ristar (Game Gear) (prototype; 1994-10-24)
- Ristar (Game Gear) (prototype; 1994-11-01)
- Ristar (Game Gear) (prototype; 1994-11-02)
- Ristar (prototype; 1994-07-01)
- Ristar (prototype; 1994-07-18)
- Ristar (prototype; 1994-08-12)
- Ristar (prototype; 1994-08-26)
- Road Rash 3: Tour De Force (prototype; 1994-11-19)
- Road Riot 4WD (prototype; 1992)
- Road Riot 4WD (prototype; 1993-07-19)
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- Sega Channel (Demo Cartridge 1)
- Sega Channel (Demo Cartridge 4)
- Sega GT 2002 (prototype; 2002-06-17)
- Sega Master System/Boot ROM (M404 prototype)
- Sega Master System/Boot ROM (v1.0 prototype)
- Shadow the Hedgehog (Xbox prototype; 2005-09-16)
- Shinobi III: Return of the Ninja Master (prototype; 1993-06-29)
- Skies of Arcadia (Dreamcast prototype; 2000-05-09)
- Slaughter Sport (prototype; 1990-07-03)
- Sonic & Knuckles (prototype; 1994-05-25)
- Sonic & Knuckles (prototype; 1994-06-06)
- Sonic & Knuckles (prototype; 1994-06-08)
- Sonic & Knuckles (prototype; 1994-06-10)
- Sonic & Knuckles (prototype; 1994-06-12)
- Sonic & Knuckles (prototype; 1994-06-18)
- Sonic & Knuckles (prototype; 1994-06-19)
- Sonic & Sega All-Stars Racing (Wii preview)
- Sonic & Sega All-Stars Racing (Xbox 360 prototype; 2009-12-01)
- Sonic 3D: Flickies' Island (Mega Drive prototype; 1996-07-03)
- Sonic 3D: Flickies' Island (Mega Drive prototype; 1996-08-14)
- Sonic 3D: Flickies' Island (Mega Drive prototype; 1996-08-19)
- Sonic 3D: Flickies' Island (Mega Drive prototype; 1996-08-25)
- Sonic 3D: Flickies' Island (Mega Drive prototype; 1996-08-30)
- Sonic 3D: Flickies' Island (Mega Drive prototype; 1996-08-31)
- Sonic 3D: Flickies' Island (Mega Drive prototype; 1996-09-04)
- Sonic 3D: Flickies' Island (Saturn prototype; 1996-10-08)
- Sonic Advance (prototype)
- Sonic Advance 2 (review prototype)
- Sonic Advance 3 (prototype; 2004-03-01)
- Sonic Adventure (2010) (Xbox 360 prototype; 2010-01-08)
- Sonic Adventure (2010) (Xbox 360 prototype; 2010-08-01)
- Sonic Adventure 2 (prototype; 2000-11-28)
- Sonic Adventure 2 (prototype; 2001-03-18)
- Sonic Adventure 2 (prototype; 2001-05-07)
- Sonic Adventure 2 (prototype; 2001-05-21)
- Sonic Adventure 2: Battle (prototype; 2001-11-29)
- Sonic Adventure 2: Battle (review prototype)
- Sonic Boom: Rise of Lyric (prototype; 2014-07-18)
- Sonic Chaos (Game Gear prototype; 1993-05-17)
- Sonic Chaos (Master System prototype; 1993-06-30)
- Sonic Chaos (Master System prototype; 1993-07-13)
- Sonic Drift (demo)
- Sonic Heroes (GameCube E3 version)
- Sonic Heroes (GameCube prototype; 2003-10-08)
- Sonic Heroes (GameCube prototype; 2003-10-13)
- Sonic Heroes (GameCube prototype; 2003-11-18)
- Sonic Heroes (PlayStation 2 prototype; 2003-09-28)
- Sonic Heroes (Xbox E3 version)
- Sonic Heroes (Xbox prototype; 2003-11-24)
- Sonic Labyrinth (prototype; 1995-05-25)
- Sonic Mega Collection (prototype; 2002-08-15)
- Sonic Mega Collection Plus (PlayStation 2 prototype; 2004-08-18)
- Sonic N (prototype; 2003-09-16)
- Sonic R (Saturn prototype; 1997-09-10)
- Sonic Riders (PlayStation 2 prototype; 2005-12-08)
- Sonic Rivals 2 (prototype; 2007-10-08)
- Sonic Rivals 2 (prototype; 2007-10-22)
- Sonic Rivals 2 (prototype; 2007-10-30)
- Sonic Rush (E3 demo)
- Sonic Shuffle (prototype; 2001-01-11)
- Sonic Spinball (8-bit) (Game Gear prototype; 1994-03-07)
- Sonic Spinball (8-bit) (Game Gear prototype; 1994-03-10)
- Sonic Spinball (8-bit) (Game Gear prototype; 1994-03-11)
- Sonic Spinball (8-bit) (Game Gear prototype; 1994-03-21)
- Sonic Spinball (8-bit) (Game Gear prototype; 1994-03-28)
- Sonic Spinball (8-bit) (Game Gear prototype; 1994-03-29)
- Sonic Spinball (8-bit) (Game Gear prototype; 1994-03-30)
- Sonic Spinball (8-bit) (Game Gear prototype; 1994-04-05)
- Sonic Spinball (8-bit) (Game Gear prototype; 1994-04-12)
- Sonic Spinball (8-bit) (Game Gear prototype; 1994-04-13)
- Sonic Spinball (8-bit) (Game Gear prototype; 1994-04-15)
- Sonic Spinball (8-bit) (Game Gear prototype; 1994-04-21)
- Sonic Spinball (8-bit) (Game Gear prototype; 1994-04-27)
- Sonic Spinball (8-bit) (Game Gear prototype; 1994-04-29 B)
- Sonic Spinball (8-bit) (Game Gear prototype; 1994-04-29)
- Sonic Spinball (8-bit) (Game Gear prototype; 1994-05-03)
- Sonic Spinball (8-bit) (Game Gear prototype; 1994-05-05)
- Sonic Spinball (8-bit) (Game Gear prototype; 1994-05-06)
- Sonic Spinball (8-bit) (Game Gear prototype; 1994-05-25)
- Sonic Spinball (8-bit) (Game Gear prototype; 1994-05-30)
- Sonic Spinball (8-bit) (Game Gear prototype; 1994-05-31)
- Sonic the Hedgehog (8-bit) (Game Gear prototype)
- Sonic the Hedgehog (Mega Drive) (prototype)
- Sonic the Hedgehog 2 (8-bit) (Game Gear AutoDemo)
- Sonic the Hedgehog 2 (Mega Drive) (CENSOR prototype)
- Sonic the Hedgehog 2 (Mega Drive) (Nick Arcade prototype)
- Sonic the Hedgehog 2 (Mega Drive) (Simon Wai prototype)
- Sonic the Hedgehog 3 (prototype; 1993-11-03)
- Sonic the Hedgehog 3C (prototype; 1994-04-08)
- Sonic the Hedgehog 3C (prototype; 1994-05-17)
- Sonic the Hedgehog CD (Mega-CD prototype; 1992-12-04)
- Sonic the Hedgehog CD (Mega-CD prototype; 1993-05-10)
- Sonic the Hedgehog CD (Mega-CD prototype; 1993-05-12)
- Sonic the Hedgehog CD (Mega-CD prototype; 1993-06-21)
- Sonic the Hedgehog CD (Mega-CD prototype; 1993-07-12)
- Sonic the Hedgehog CD (Mega-CD prototype; 1993-08-01)
- Sonic the Hedgehog CD (Mega-CD prototype; 1993-08-06 PAL)
- Sonic the Hedgehog CD (Mega-CD prototype; 1993-08-06)
- Sonic the Hedgehog CD (Mega-CD prototype; 1993-08-19)
- Sonic the Hedgehog CD (Mega-CD prototype; 1993-09-20)
- Sonic the Hedgehog CD (Mega-CD prototype; 1993-10-13)
- Sonic the Hedgehog CD (Windows PC prototype; 1995-09-07)
- Sonic the Hedgehog CD (Windows PC prototype; 1995-09-14)
- Sonic the Hedgehog Pocket Adventure (prototype; 1999-10-22)
- Sonic the Hedgehog Triple Trouble (prototype; 1994-08-08)
- Sonic the Hedgehog Triple Trouble (prototype; 1994-08-16)
- Sonic the Hedgehog's Gameworld (prototype; 1996-07-01)
- Sonic the Hedgehog's Gameworld (prototype; 1996-07-19)
- Sonic the Hedgehog's Gameworld (prototype; 1996-08-02)
- Sonic the Hedgehog's Gameworld (prototype; 1996-08-08)
- Sonic Unleashed (Xbox 360 prototype; 2008-10-14)
- Sonic Unleashed (Xbox 360 prototype; 2008-10-28)
- Sonic X-treme (prototype; 1996-07-14)
- Sonic X-treme (prototype; 1996-07-18)
- Sonic X-treme (V40 prototype)
- Space Harrier (32X prototype; 1994-09-20)
- Star Wars Arcade (prototype; 1994-08-30)
- Stellar Assault (prototype; 1995-02-06)
- Stellar Assault (prototype; 1995-02-13)
- Stellar Assault (prototype; 1995-02-22)
- Stellar Assault (prototype; 1995-03-02)
- The Story of Thor: A Successor of the Light (prototype; 1994-04)
- The Story of Thor: A Successor of the Light (prototype; 1994-10-04)
- The Story of Thor: A Successor of the Light (prototype; 1994-10-17)
- The Story of Thor: A Successor of the Light (prototype; 1994-11-01)
- The Story of Thor: A Successor of the Light (prototype; 1994-11-15)
- Streets of Rage 2 (Mega Drive prototype)
- Streets of Rage 3 (prototype; 1994-03-09)
- Striker (Mega Drive) (prototype)
- Super Columns (prototype; 1994-11-11)
- Super Columns (prototype; 1994-11-30)
- Super Columns (prototype; 1994-12-15)
- Super Columns (prototype; 1994-12-21)
- Super Columns (prototype; 1994-12-26)
- Super Columns (prototype; 1994-12-28)
- Super Columns (prototype; 1995-01-06)
- Super Columns (prototype; 1995-01-09)
- Super Monkey Ball Jr. (prototype; 2002-08-06)
- Sylvester and Tweety in Cagey Capers (prototype; 1993-10-11)
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- Tails Adventures (review prototype)
- Taz in Escape from Mars (Game Gear prototype; 1994-05-11)
- Taz in Escape from Mars (Game Gear prototype; 1994-08-10)
- Taz in Escape from Mars (Game Gear prototype; 1994-08-19)
- Taz in Escape from Mars (Game Gear prototype; 1994-08-30)
- Taz in Escape from Mars (Mega Drive prototype; 1994-03-09)
- Taz in Escape from Mars (Mega Drive prototype; 1994-04-18)
- Taz in Escape from Mars (Mega Drive prototype; 1994-05-09)
- Taz in Escape from Mars (Mega Drive prototype; 1994-05-18)
- Taz in Escape from Mars (Mega Drive prototype; 1994-05-23)
- Taz in Escape from Mars (Mega Drive prototype; 1994-06-02)
- Taz in Escape from Mars (Mega Drive prototype; 1994-06-07)
- Taz in Escape from Mars (Mega Drive prototype; 1994-06-10)
- Tempo (prototype; 1994-12-29)
- Tempo (prototype; 1995-01-21)