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Proto:Sonic the Hedgehog 4: Episode I

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This page details one or more prototype versions of Sonic the Hedgehog 4: Episode I.

Sonic the Hedgehog 4 - Episode I had... an interesting development cycle, to say the least. Three prototypes are known to exist (although one, a PS3 "Sony QA" build, is yet to be released publicly), all seemingly coming from the same timeframe.

Sub-Pages

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PartnerNET Prototype
Xbox 360 build dated February 9, 2010, notable for causing such extreme fan backlash that the game's release was delayed to fix the cited issues.
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Japanese WiiWare Prototype
Wii build also dated February 9, 2010, which had accidentally been published on the game's release date.

General

  • All three prototypes bear strong resemblances to the iOS/Android version. They contain the two controversial "gimmick" levels, less-polished physics, and simpler Stage Select screen that were replaced in most releases.