Sonic 1 - Purish Engine (Genesis) Romhack

This is the current version of Sonic 1 Purish Engine.

Purish Engine is open source and it’s unique base for ROM Hacking structure by Mildanner.

This is not “Sonic 1 Definitive”, this is Sonic 1 Engine Base that Mildanner made by modifying it how does he like to be used in a ROM Hack Structure but with improved stuff.

Known Modifications in Engine

PAL fix SMPS;
Sonic Jump Dash Ability;
Clap and Cymbal added to Mega PCM;
Extra music 94-9F;
Clean palette in half;
Smooth special stage;
ASCII Level Select;
Speed Cap Removed;
Sonic 1 Prototype Drums;
Extended Debug Mode;
New 2 water palette for Labyrinth Zone and SBZ 3;
Eggman and S Monitor are now functional;
Debug Mode fixed placing items.

Programs used

Audacity – PCM exporting
Notepad++ – Coding
Paint.NET – Manual image editing
Flex2 – Sprite editing
ClownMapEd – Simple art editing
HivePal – Change palettes
SMPSConv – Music conversions

Hashes:

Filename: Sonic The Hedgehog (USA, Europe).md
CRC-32: f9394e97
SHA-1: 6ddb7de1e17e7f6cdb88927bd906352030daa194

Staff/Credits:

Mildanner - Disassembly Owner, Palette Editor
SCHG - Fixing & Improving Game Code
Vladikcomper - Mega PCM 2
Mercury - ReadySonic
Selbi - Sonic CD SFX Jump
ProjectFM - Jump Dash Code
Hame - Mean Bean SMPS Port
Techokami - Custom Font HUD
CartoonsAnimate22 - Sprites
DarkShamilKhan - Inspiration
Hivebrain - Original disassembly
Sonic Retro - GitHub disassembly
RetroKoH - Help with Extended Debug Mode and some guides
SoullessSentinel - Sonic 1 ASCII Level Select Font
PeanutNoceda - Unique HUD Life Counter inspiration
Louplayer - Custom Sonic Monitor Sprite
Nineko - Functional eggman monitor

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.