Sonic the Hedgehog 2 (pre-beta)

From Sonic Retro

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Sonic the Hedgehog 2 (pre-beta)
Prerelease of: Sonic the Hedgehog 2
System: Sega Mega Drive
Build date: 1992-09-14
ROM size: 1 MB
Source: EPROMs
Found by: drx

The Sonic the Hedgehog 2 "pre-beta" prototype is a prototype build of Sonic the Hedgehog 2 for the Sega Mega Drive. The EPROMs it was contained on claim it to be a "pre-beta" dated September 14, 1992.

To the untrained eye this version of Sonic 2 could be passed off as the final game, with every level being accounted for and all but the final three (Sky Chase Zone, Wing Fortress Zone (known here as Sky Fortress Zone) and Death Egg Zone) being completable. However, the Special Stages and 2-player mode have yet to be implemented properly, and there are a number of minor differences and layout changes, particularly towards the end of the game. It also lacks much of the polish seen in prototypes from here on out, such as title and score cards, introductions and endings.

It is possible this build was used when creating screenshots for the US manual for Sonic 2, and was the one photographed or recorded for a number of gaming publications around late September and early October 1992.


This prototype was discovered and acquired by drx of Hidden Palace in conjunction with The Cutting Room Floor, along with other prototypes of Sonic games, and dumped as part of "Sonic Month 2019" from October to November 2019[1]. This prototype was released to the public on November 9, 2019, one day before the Alpha prototype.


Sonic Retro emblem.svg Main article: Sonic the Hedgehog 2 (pre-beta)/Comparisons



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File: Sonic the Hedgehog 2 (Sep 14, 1992 prototype).zip (695 kB) (info)

External links


Sonic the Hedgehog 2 (pre-beta), prototype version of Sonic the Hedgehog 2 (16-bit)
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Main page | Comparisons | Maps | Hidden content

Part of Sonic the Hedgehog 2 (16-bit) development

Sonic the Hedgehog 2 (16-bit)
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Main page (KiS2|2013|3D|Ages)
Comparisons (KiS2) (2013)
Maps (KiS2) (2013)

Promotional material
Magazine articles
Video coverage

Hidden content (KiS2) (2013)
Bugs (KiS2) (2013)
Region coding
Hacking guide