Sonic the Hedgehog CD (Mega-CD prototype; 1992-12-04)

From Sonic Retro

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Sonic the Hedgehog CD v0.02
Prerelease of: Sonic the Hedgehog CD
System: Sega Mega-CD
Build date: 1992-12-04
Source: CD-R
Found by: drx

Sonic the Hedgehog CD build v0.02, referred to as CD Sonic the Hedgehog on the title screen, is the earliest known prototype of Sonic the Hedgehog CD for the Sega Mega-CD produced on December 4th, 1992, predating the 510 prototype by five months.

The prototype consists of the first two Zones of Palmtree Panic (called "Salad Plain" in this release) and Sonic can travel to either the Past or Bad Future versions of the Round. Given this build debuted nine months prior to the final release of Sonic CD, many elements of the game are missing and there are several obvious bugs.


This prototype was originally featured at the Yuusei Sega World event in 1992, and was the first public appearance of Sonic the Hedgehog CD worldwide. The prototype was also used as an early preview for various magazines in the months following the event.[1]

The prototype was discovered and acquired by drx of Hidden Palace in conjunction with The Cutting Room Floor, along with several other prototypes of Sonic CD and other Sonic games, and dumped as part of "Sonic Month 2019" from October to November 2019[2]. This prototype, along with the other Sonic CD prototypes, was released to the public on October 26, 2019.


Sonic Retro emblem.svg Main article: Sonic the Hedgehog CD (Mega-CD prototype; 1992-12-04)/Comparisons

Physical scans


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External links


Sonic the Hedgehog CD (Mega-CD prototype; 1992-12-04), prototype version of Sonic the Hedgehog CD
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Main page | Comparisons | Maps | Hidden content | Technical information

Part of Sonic the Hedgehog CD development

Sonic the Hedgehog CD
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Main page (2011)
Comparisons (2011)

Promotional material
Magazine articles
Video coverage

Hidden content (2011)
Hacking guide