PRESENTS:

THE UNRELEASED GAMES!

The Coleco Vision was one of the best video game systems from the early 1980's era. A complete set of RELEASED cartridges for the system is 139. (140 if you count the promotional C.A.T. Oil Sampling Game, and 141 if you count the Super Sketch accesory) However, as with most gaming systems, several games were developed that were either postponed or canceled, and as a result, they were never released. Early beta builds and prototypes of several of these unreleased games have been found over the years, and so I put together this page to document them all in one place.

I am not an expert in the field of Coleco Vision protos, and as such, I don't have the complete history of when & where all of these games were first discovered. So, whenever possible, I have given as much information as I have available, but if anyone out there can contribute additional details, then please contact me so that I can improve and enhance this data base by implementing the information here.

THESE 6 TITLES WERE ONLY RUNNING DEMONSTRATIONS SHOWN AT INDUSTRY TRADE SHOWS.
COLECOVISION PROTO FACT FILE:

GAME: Berenstain Bears

DEVELOPER: Coleco

YEAR: 1984

ROM SIZE: 8 KB

NOTES: this is a non playable demo that was being developed for use with the KID VID voice module accessory. 2600 version was released.

COLECOVISION PROTO FACT FILE:

GAME: Smurf Saves the Day

DEVELOPER: Coleco

YEAR: N/A

ROM SIZE: 16 KB

NOTES: this is a non playable demo that was being developed for use with the KID VID voice module accessory. 2600 version was released.

COLECOVISION PROTO FACT FILE:

GAME: Super Front Line

DEVELOPER: Coleco

YEAR: 1984

ROM SIZE: N/A

NOTES: this is a non playable demo of what would have most likely been an upcoming ADAM super game.

COLECOVISION PROTO FACT FILE:

GAME: Sword & Sorcerer

DEVELOPER: Coleco

YEAR: 1983

ROM SIZE: 16 KB

NOTES: this is a non playable demo of an action/adventure game that was being developed for the ColecoVision system.

COLECOVISION PROTO FACT FILE:

GAME: Tunnels & Trolls

DEVELOPER: Coleco

YEAR: 1984

ROM SIZE: N/A

NOTES: this is a non playable demo of an upcoming game that was being developed for the Coleco Vision & ADAM systems.

COLECOVISION PROTO FACT FILE:

GAME: Orbit

DEVELOPER: Parker Brothers

YEAR: N/A

ROM SIZE: 8 KB

NOTES: this is a non playable demo of an upcoming game. Some rumors say it was an early tech demo of the Gyruss game engine.


THIS GAME IS ACTUALLY PLAYABLE, BUT WITHOUT MODIFICATIONS, IT WILL NOT WORK ON ORIGINAL HARDWARE.
COLECOVISION PROTO FACT FILE:

GAME: Dragon's Lair

DEVELOPER: Coleco

YEAR: 1984

ROM SIZE: 24 KB

NOTES: this early beta was being developed for use with the ADAM Computer but was modified to run on a ColecoVision.


AMONG THE VERY FIRST SUPER GAMES, INTENDED FOR EXPANSION MODULE #3, THEN REPORPUSED FOR ADAM.
COLECOVISION PROTO FACT FILE:

GAME: Super Donkey Kong

DEVELOPER: Coleco

YEAR: 1982

ROM SIZE: 32 KB

NOTES: an early beta version of the super game that was originally being developed for use with Expansion Module #3, then ADAM.


ORIGINALLY INTENDED TO HAVE A FIFTH LEVEL IMPLEMENTED, BUT NINTENDO DID NOT APROVE IT!
COLECOVISION PROTO FACT FILE:

GAME: Super Donkey Kong Junior

DEVELOPER: Coleco

YEAR: 1983

ROM SIZE: 32 KB

NOTES: an early beta version of the super game that was originally being developed for use with Expansion Module #3, then ADAM.


NICE IDEAS ALSO DEVELOPED BUMP 'N JUMP, BURGERTIME, AND ILLUSIONS FOR THE COLECOVISION.
COLECOVISION PROTO FACT FILE:

GAME: Fireman

DEVELOPER: Nice Ideas / Coleco

YEAR: 1984

ROM SIZE: 32 KB

NOTES: This prototype was found in 2009 by David Hill and presented to the Coleco Vision community at ADAMcon 21.

KONAMI COLECOVISION GAMES: TIME PILOT, ROC 'N ROPE, ANTARCTIC ADVENTURE & MONKEY ACADEMY
COLECOVISION PROTO FACT FILE:

GAME: Video Hustler

DEVELOPER: Konami / Coleco

YEAR: 1984

ROM SIZE: 16 KB

NOTES: A port of Konami's pool simulation arcade game. Released by Sean Kelly in 1996.


Activision officially released 8 titles for the Colecovision and Telegames released 2 others!
COLECOVISION PROTO FACT FILE:

GAME: Steamroller

DEVELOPER: Activision

YEAR: 1984

ROM SIZE: 16 KB

NOTES: designed & programmed by David Rolfe, this proto was released in 2000 by Intellivision Productions, Inc.

ATARI released 4 games for the ColecoVision under the name AtariSOFT.
COLECOVISION PROTO FACT FILE:

GAME: Dig Dug

DEVELOPER: Namco / Atari

YEAR: 1984

ROM SIZE: 24 KB

NOTES: Sean Kelly released this proto in 2002.


COLECOVISION PROTO FACT FILE:

GAME: Joust

DEVELOPER: Williams / Atari

YEAR: 1983

ROM SIZE: 24 KB

NOTES: an early beta version that is missing the title screen and also has no sound implemented. Released by Sean Kelly in 2002.


COLECOVISION PROTO FACT FILE:

GAME: Moon Patrol

DEVELOPER: Irem / Williams / Atari

YEAR: 1984

ROM SIZE: 32 KB

NOTES: this beta was also known as "Matt Patrol" & "Flying Brassieres". Released by Sean Kelly in 1996


COLECOVISION PROTO FACT FILE:

GAME: Pac Man

DEVELOPER: Namco / Midway / Atari

YEAR: 1983

ROM SIZE: 16 KB

NOTES: a very good arcade port. Released by Sean Kelly in 2002.


20TH CENTURY FOX DEVELOPED 4 GAMES FOR THE COLECOVISON AND RELEASED NONE!
COLECOVISION PROTO FACT FILE:

GAME: The Fall Guy

DEVELOPER: FOX

YEAR: 1983

ROM SIZE: 28 KB

NOTES: based on the hit 1980's television show and uses the ColecoVision Driving Module.


COLECOVISION PROTO FACT FILE:

GAME: M*A*S*H

DEVELOPER: FOX

YEAR: 1983

ROM SIZE: 16 KB

NOTES: based on the 1970 motion picture and television show.


COLECOVISION PROTO FACT FILE:

GAME: Porky's

DEVELOPER: FOX

YEAR: 1983

ROM SIZE: 16 KB

NOTES: based on the 1982 motion picture.


COLECOVISION PROTO FACT FILE:

GAME: The Yolk's on You

DEVELOPER: FOX

YEAR: 1983

ROM SIZE: 16 KB

NOTES: possibly named after a 1980 Looney Tunes cartoon.


EPYX DEVELOPED 4 GAMES FOR THE COLECOVISON BUT ONLY RELEASED 3.
COLECOVISION PROTO FACT FILE:

GAME: Escape from the Mind Master

DEVELOPER: EPYX

YEAR: 1983

ROM SIZE: 16 KB

NOTES: A very detailed & complex 3-D adventure game. Discovered by Jerry Greiner.


N.A.P. / PROBE 2000 RELEASED THE GAME WAR ROOM FOR THE COLECOVISION.
COLECOVISION PROTO FACT FILE:

GAME: Power Lords

DEVELOPER: NAP / Probe 2000

YEAR: 1983

ROM SIZE: 32 KB

NOTES: based on the popular action figures from 1983. Was released for the Odyssey 2 game system, and is quite scarce.


FAR AHEAD OF ITS' TIME, THIS GAME WAS INTENDED TO HAVE A BATTERY BACK-UP SAVE FEATURE!
COLECOVISION PROTO FACT FILE:

GAME: Lord of Dungeon

DEVELOPER: NAP / Probe 2000

YEAR: 1983

ROM SIZE: 32 KB

NOTES: Previous working title was: Caverns & Creatures.


BREAKING NEWS! RECENT DISCOVERY!
COLECOVISION PROTO FACT FILE:

GAME: The Adventures of the Pink Panther

DEVELOPER: NAP / Probe 2000

YEAR: 1983

ROM SIZE: 32 KB

NOTES: based on the Pink Panther franchise and also developed for the Atari 2600 game system. It is a non-playable rolling demo. Given to the community in January 2019 by retroillucid.


BREAKING NEWS: RECENT DISCOVERY!
COLECOVISION PROTO FACT FILE:

GAME: Masters of the Universe

DEVELOPER: Mattel Electronics

YEAR: 1983

ROM SIZE: 32 KB

NOTES: based on the popular He-Man franchise and released for the Atari 2600 & Intellivision game systems. Generously given to the community in December 2023 by retroillucid.


COLECOVISION PROTO FACT FILE:

GAME: Masters of the Universe

DEVELOPER: Mattel Electronics

YEAR: 1983

ROM SIZE: N/A

NOTES: Even less is known about this game than its' predeccesor.

More Entries Coming Soon! Atari's Missile Command? Ms. Pac-Man? Sega's Tac Scan?


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