Sonic the Hedgehog CD (prototype; 1993-08-06 PAL)

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SonicCD MCD EU Title.png
Sonic the Hedgehog CD v1.09
Prerelease of: Sonic the Hedgehog CD
System: Sega Mega-CD
Build date: 1993-08-06
Source: CD-R
Found by: drx

Sonic the Hedgehog CD build v1.09 is a near-final prototype of Sonic the Hedgehog CD for the Sega Mega-CD, built on the same day as the final Japanese release on August 6th, 1993.

This build is a prerelease PAL build that is similar to the final Japanese build and is fully playable. Only five files on the disc have some differences, and the IP data has been altered in comparison to the original Japanese release.


This prototype was discovered and acquired by drx 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[1]. This prototype, along with the other Sonic CD prototypes, was released to the public on October 26, 2019.

Physical scans

Mega-CD, second copy

SonicCD109 MCD Disc Back.pngSonicCD109 MCD Disc.png

External links


Sonic the Hedgehog CD
Scd titlescreen.png

Main page (2011)
Comparisons (2011)

Promotional material
Magazine articles
Video coverage

Hidden content (2011)
Hacking guide