Hack Name:  Sonic 1 The Blue Blur (Fixed)
Platform: 
Genre: 
Released by: 
Language: 
Status:  Complete
Patch Version:  v1.1
Last updated:  April 13, 2020
Type of Hack:  Bug Fix, Graphics, Levels, Text
Downloads:  41

Sonic 1 The Blue Blur is a hack of Sonic the Hedgehog for the Sega Mega Drive, created by Schwa. It gives each Zone totally new palettes and layouts, with the latter designed to be more difficult than those of the original game.

It was originally released in 2007 on Sonic Retro by Schwa and had a very serious bug in it located right at the start of Zone 6 ”Gimmick Egg Zone Act 1” when Sonic starts to walk forward the game heavily crashes with no way forward making the game incomplete with no way of finishing it. That is until 2020 when I fixed it.

I decided to open up the ROM one day in a hex editor and look for where the bad string was located. The offending ”illegal instruction” was the value 00011A with the corresponding numbers 00011A05-00011A06, with a simple change of the ASCII code 07 to 88 I was able to get the game up and running flawlessly and as a result, it does not crash anymore at the start of Gimmick Egg Zone Act 1. I can personally confirm that this rom will now work on any original Mega Drive PAL or NTSC Japanese Mega Drive or NTSC Genesis. It will also work on the Analogue Mega SG and any emulator. Just be sure you download it from this page. Downloading it from Razor Zenon, Amyrose, Sonic Retro, romhacking.net or the Schwa rainbow of hacks page you’ll get the (broken) rom each and every time.

I also fixed the checksum for the patch so you don’t have to do it yourself after downloading.

Hashes: 
Filename: Sonic The Hedgehog (UE).md
CRC-32: d365f487
SHA-1: 1aa32fb992cae870d2c09b5964c9eba43e0bb8d5
Staff/Credits: 
Schwa: Colour palette, level layouts
Adrian Gauna: Illegal instruction/bug fix
File download: 
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edwinmusic
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edwinmusic
1 month ago

I really congratulate the creators of this hack and its improvements, they have really thought about every detail, nothing is placed upside down or to fill spaces, its design is all very well organized.

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