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 166 pages are in this category, out of 166 total.
A
B
C
- Castle of Illusion Starring Mickey Mouse (8-bit) (Master System prototype; 1990-05-25)
- Castlevania: Bloodlines (prototype; 1993-08-04)
- Castlevania: Bloodlines (prototype; 1993-12)
- Comix Zone (prototype; 1995-04-04)
- Comix Zone (prototype; 1995-05-26)
- Cool Spot (Mega Drive prototype; 1992-12-22)
- Cosmic Carnage (prototype; 1994-09-06)
- Cosmic Carnage (prototype; 1994-09-21)
- Curse (prototype; 1990-06-26)
D
- Defenders of Oasis (prototype)
- Dinosaurs for Hire (prototype; 1993-04-26)
- Dinosaurs for Hire (prototype; 1993-04-27)
- Dinosaurs for Hire (prototype; 1993-05-02)
- Disney's Aladdin (prototype; 1993-06-27)
- Doom (32X) (prototype; 1994-09-06)
- Doom (32X) (prototype; 1994-09-09)
- Doom (32X) (prototype; 1994-09-14)
- Doom (32X) (prototype; 1994-09-16)
- Dragon: The Bruce Lee Story (8-bit) (prototype)
- Dynamite Headdy (prototype; 1994-04)
- Dynamite Headdy (prototype; 1994-06-14)
E
F
G
- Gain Ground (prototype; 1990-07-27)
- Golden Axe (Mega Drive prototype; 1989-10-14)
- Golf Magazine: 36 Great Holes Starring Fred Couples (prototype; 1994-07-06)
- Golf Magazine: 36 Great Holes Starring Fred Couples (prototype; 1994-10-11)
- Golf Magazine: 36 Great Holes Starring Fred Couples (prototype; 1994-10-17)
- Golf Magazine: 36 Great Holes Starring Fred Couples (prototype; 1994-10-24)
- Golf Magazine: 36 Great Holes Starring Fred Couples (prototype; 1994-10-26)
- Golf Magazine: 36 Great Holes Starring Fred Couples (prototype; 1994-11-01)
- Golf Magazine: 36 Great Holes Starring Fred Couples (prototype; 1994-11-03)
- Golf Magazine: 36 Great Holes Starring Fred Couples (prototype; 1994-11-05)
- GP Rider (Game Gear) (prototype; 1994-01-04)
- Gunstar Heroes (prototype; 1993-04)
M
- Metal Head (prototype; 1994-11-14)
- Metal Head (prototype; 1994-11-21)
- Michael Jackson's Moonwalker (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)
- Mystic Defender (prototype; 1989-09-14)
N
P
R
- R.B.I. Baseball '95 (prototype)
- 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)
S
- Sega Channel (Demo Cartridge 1)
- Sega Channel (Demo Cartridge 4)
- Sega Master System/Boot ROM (M404 prototype)
- Sega Master System/Boot ROM (v1.0 prototype)
- Slaughter Sport (prototype; 1990-07-03)
- 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)
- 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)
T
- 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)
- Tempo (prototype; 1995-01-24)
- Tempo (prototype; 1995-01-26)
- Tempo Jr. (prototype; 1994-11-28)
- Tempo Jr. (prototype; 1994-12-05)
- Tempo Jr. (prototype; 1994-12-12)
- Tempo Jr. (prototype; 1994-12-26)
- Tempo Jr. (prototype; 1995-01-17)
- Tempo Jr. (prototype; 1995-01-20)
- Tempo Jr. (prototype; 1995-01-31)
- Tempo Jr. (prototype; 1995-02-06)
- Tempo Jr. (prototype; 1995-02-15)
- Thunder Force III (prototype; 1990-08-01)
- ToeJam & Earl in Panic on Funkotron (prototype; 1993-08)
- Toy Story (sample)
- Trouble Shooter (prototype; 1991-05-28)
- Trouble Shooter (prototype; 1991-09-12)
V
W
X
- X-Men 2: Clone Wars (prototype; 1994-05-06)
- X-Men 2: Clone Wars (prototype; 1994-11-23)
- X-Men 2: Clone Wars (prototype; 1994-12-02)
- X-Men 2: Clone Wars (prototype; 1994-12-03)
- X-Men 2: Clone Wars (prototype; 1994-12-06)
- X-Men: Mojo World (prototype; 1996-06-05)
- X-Men: Mojo World (prototype; 1996-06-13)
- X-Men: Mojo World (prototype; 1996-06-24)
- X-Men: Mojo World (prototype; 1996-06-25)
- X-Men: Mojo World (prototype; 1996-06-27)
- X-Men: Mojo World (prototype; 1996-06-28)
- X-Men: Mojo World (prototype; 1996-06-29)
- X-Men: Mojo World (prototype; 1996-07-05)
- X-Perts (prototype)
Z
- Zaxxon's Motherbase 2000 (prototype; 1995-02-10)
- Zaxxon's Motherbase 2000 (prototype; 1995-02-21)
- Zaxxon's Motherbase 2000 (prototype; 1995-02-23)
- Zaxxon's Motherbase 2000 (prototype; 1995-02-27)
- Zaxxon's Motherbase 2000 (prototype; 1995-03-03)
- Zaxxon's Motherbase 2000 (prototype; 1995-03-06)
- Zaxxon's Motherbase 2000 (prototype; 1995-03-10)
- Zaxxon's Motherbase 2000 (prototype; 1995-03-15)
- Zaxxon's Motherbase 2000 (prototype; 1995-03-31)