Sally Acorn in Sonic The Hedgehog (Genesis) Romhack

This is a hack which replaces the main character with Sally Acorn of SatAM and Comic Book fame in the original Sonic the Hedgehog for Genesis. Sally is slower than Sonic and can’t use a ground roll or spin dash. However, she has an attack button and has other moves which are detailed in the readme.

The patch is in xdelta format due to shifted data resulting in IPS patches with original code in them.

Version 1.8

Sally now has a projectile attack as in Sonic 2. It works more or less identically, complete with added duck and downward fire abilities.
Sally can now hack Sonic 1! Use the B button to use NICOLE’s scan mode on monitors and other obstacles. There’s not a great deal of objects it works on so far, but it’s worth being creative and seeing how they have affect.
Some cosmetic refinements such as palette and sprite tune ups.

Version 1.9

Collision bug fixed.
Bug concerning projectile collision with bumpers fixed.
Bug which causes hackable objects to explode into animals when invincible fixed.

Version 2.0

Rev 01 graphics added.
Level select order fixed.
Omitted a couple of objects NICOLE could scan due to buggy programming and making Sally’s gameplay a bit too cheap.
Scan mode now deletes when firing at objects, preventing bug where effects turn on and off again on objects due to laser flying for too long inside them.
Most of the demos rerecorded (SBZ2’s credits demo is still buggy due to timing issues with the cylinders).
Bug causing Sally to be able to smash certain objects while running fixed.
Bug causing NICOLE’s laser to collect rings fixed.
Sally’s jump height while downward firing in water fixed.
Minor pallette fixes for certain sprites.

Version 2.2

Fixed bug that allowed Sally to destroy Marble Zone blocks.
Fixed bug where Sally’s landing animation doesn’t activate underwater.
Got SBZ2’s ending demo to work at least semi-competently.
Minor palette tweaks.
Minor tweaks to Sally’s stats (mostly to make her slightly slower but with better acceleration/deceleration).

Hashes:

Sonic The Hedgehog (USA_ Europe).md - NOINTRO
CRC32: F9394E97
MD5: 1BC674BE034E43C96B86487AC69D9293
SHA-1: 6DDB7DE1E17E7F6CDB88927BD906352030DAA194
SHA-256: 46160BAA06362C711C9F1A5017CB7371026444936C8AF5E93A78996CF32FF2A6

File download:

Help about patching:

Most of the files you're about to download need to be applied to your game. Here is a list of utilities that allow you to do this:

Online Patcher: Marc Roblero's online patcher. Works with many different file types.
Floating IPS: NWell-known patcher for applying IPS and BPS files.
Delta Patcher: Used to apply xDelta files.
More Patchers

On most files, you can also press “Patch It”, to apply the patch without downloading the file.