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Proto:Sonic the Hedgehog 2 (Genesis)/0524 Build

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This cactus is UNDER CONSTRUCTION
This article is a work in progress.
...Well, all the articles here are, in a way. But this one moreso, and the article may contain incomplete information and editor's notes.
Notes: A lot of things need to be added, some final screenshots to compare with the prototype, rewording, etc.

This is a sub-page of Proto:Sonic the Hedgehog 2 (Genesis).

The 0524 Prototype build of Knuckles in Sonic 2 is the current earliest known prototype of the game. It was released by drx in the February 23rd, 2008 prototype dump, along with the other Knuckles in Sonic the Hedgehog 2 prototypes.

Download.png Download Knuckles in Sonic 2 (0524 Prototype)
File: Knuckles in Sonic (Prototype 0524).bin (4 MB) (info)


Differences

0524 0606 onwards
KSonic2TitleScreen524.png KSonic2TitleScreenFinal.png

The KNUCKLES THE ECHIDNA IN banner above the title screen emblem isn't implemented yet, but the emblem still descends to make room for it. Graphics for the banner do exist in the ROM however, even though they go unused. The PRESS START text is positioned slightly lower then in the final.

(Source: Sonic Retro(comparison info)


0524 0606 onwards
Sonic2KnucklesProtoGetEmerald.png Sonic2KnucklesFinalGetEmerald.png

Chaos Emerald result screens don't yet mention Knuckles, instead using Sonic's name.

Sonic 2 Leftovers

Level Select: A + Start at Title Screen.
Debug Mode: A + Start while selecting a level from Level Select.


0524 Final
KSonic2SuperKnuckles524.png Sonic2KnucklesFinalSuperForm.png

When Knuckles goes Super in this build, it still uses Super Sonic's palette. The final uses the palette from Sonic & Knuckles.

0524 Final
Bluckles. Knuckles.

When the Super form wears off, Knuckles mistakenly uses Sonic's regular palette. This is fixed in the final.

Oddities

  • Knuckles acts rather erratically in the demos.
Sonic2KnucklesErraticDemoBehavior.gif
  • In Casino Night Zone Act 1, using the left flipper to go to the top left corner of the map will make the game freeze, though you can avoid this by holding Left while rising from the flipper. This is caused by the developers forgetting to put a sprite terminator in the original game, which miraculously doesn't cause issues in regular Sonic 2 due to the code just above resembling said terminator.
Sonic in Knuckles in sonic 2.png