TL;DR
Hidden Palace, in collaboration with Last Minute Continue, has published several early builds of Shadow the Hedgehog alongside a holiday bundle of other Sega-era prototypes. The release includes E3 and multiple prototype dumps and is presented with a lengthy contextual essay about Sega and Sonic Team's history.
What happened
Hidden Palace and Last Minute Continue posted a holiday collection of prototype game builds that prominently includes multiple early versions of Shadow the Hedgehog for the Nintendo GameCube. The package highlights an E3 prototype and a complete dump of a development build labelled “Beta 4,” alongside a wider set of prototype releases for other Sega-related titles. The release was framed as the culmination of a lengthy recovery and preservation effort; the hosts said they took extra time to prepare this material after encountering unexpected complications during the process. The announcement is accompanied by an extended article that places the prototypes in context, recounting shifts at Sega — including the company’s 2001 move to third-party publishing — and tracing Sonic Team’s development arc from Sonic Adventure through later titles such as Sonic Adventure 2 and Sonic Heroes.
Why it matters
- Preserves internal development builds that can inform research into how commercial games evolved during production.
- Adds previously scarce early versions of Shadow the Hedgehog to public archives, which can aid historical and fan-driven analysis.
- The release and accompanying narrative highlight broader industry changes at Sega after its 2001 decision to leave the hardware business.
- Offers a primary-source look at development practices and prototype variation during a transitional period for Sonic Team.
Key facts
- The release was made by Hidden Palace in collaboration with Last Minute Continue.
- Included Shadow the Hedgehog prototypes dated May 27, 2005; Sep 15, 2005; and Sep 22, 2005.
- The bundle contains an E3 prototype of Shadow the Hedgehog and a dump identified as “Beta 4.”
- Other prototypes shared in the holiday collection include Billy Hatcher and the Giant Egg (Jan 12, 2006) and Sonic Riders (Dec 2, 2005).
- Additional titles listed in the collection are Sega Classics Collection (Jun 29, 2005), Sonic Gems Collection (Jun 21 and Jul 4, 2005), and Sonic Mega Collection Plus (Aug 17, 2004).
- Sonic Riders: Zero Gravity prototype builds with timestamps Sep 1, 2007 (12.26 and 12.40) are part of the offering.
- The announcement encouraged community discussion on the project’s Discord server and referenced a Twitch stream that covered the release.
- The accompanying article situates the prototypes within a longer narrative about Sega’s creative shifts after its January 2001 announcement to move to third-party publishing.
- The write-up reviews Sonic Team’s trajectory, referencing landmark projects such as Sonic Adventure, Phantasy Star Online, Sonic Adventure 2, and the announcement of Sonic Heroes at E3 2003.
What to watch next
- Whether Hidden Palace or Last Minute Continue publish further technical details about the disc recovery or exact provenance of these files: not confirmed in the source.
- If additional prototype dumps or related archival material will be released in follow-up updates: not confirmed in the source.
- Any community-led analyses or preservation projects that build on these dumps (timelines and outcomes): not confirmed in the source.
Quick glossary
- Prototype: An early or in-development version of a game used during testing and iteration before final release.
- Beta: A pre-release build of software that is typically feature-complete but may still contain bugs and unfinished content.
- E3: Electronic Entertainment Expo, a major industry trade event where developers and publishers showcase upcoming games and hardware.
- Dump: A digital copy extracted from storage media (such as a disc or cartridge) intended to preserve the data outside its original hardware.
- VMU: Visual Memory Unit, a memory card peripheral originally used with the Sega Dreamcast for saving data and interacting with certain game features.
Reader FAQ
What was released in this drop?
A holiday collection of prototype builds including multiple Shadow the Hedgehog prototypes (dated May 27, Sep 15, and Sep 22, 2005), an E3 prototype, and a Beta 4 dump, plus prototypes for several other Sega-era titles.
Who published these files?
The release was presented by Hidden Palace in partnership with Last Minute Continue.
Do we know how the prototypes were recovered from the original discs?
Not confirmed in the source.
Where can people discuss the release?
The announcement points readers to a Discord server for discussion and references a Twitch stream that covered the release.

News/One Bad Ass Hedgehog – Shadow the Hedgehog Jump to navigation Jump to search Hidden Palace and Last Minute Continue PROUDLY present… Shadow the Hedgehog (May 27, 2005 prototype) Shadow…
Sources
- Demystifying DVDs
- Hidden Palace Preserves Rare Shadow the Hedgehog …
- Shadow the Hedgehog (Sep 22, 2005 prototype)
- Proto:Shadow the Hedgehog/Beta 4
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