Gunstar Heroes: Ultimate Edition (Genesis) Romhack

Gunstar Heroes: Ultimate Edition is the new definitive way to experience Treasure’s masterpiece. New features include:

ROM is converted to be region-free.
The Gunslinger mode from the 3DS version has been backported. Press (down+weapon select) to switch between free and fixed mode. Like on 3DS, this works best if the player is not currently firing. Requires 2 weapon slots filled. Also works while the game is paused.
A brand new manual which restores the markedly different Japanese story, as well as the character bios.
Relocalized cutscenes. Most notably, Green’s backstory from the Japanese version is restored.
Every Gunstar Heroes advertisement included as a bonus.
An extra patch which adds an EXP system. Players deal extra damage per level. A new level is reached every 200,000 points. Caps at level 6, or 1,000,000 points.

Gunstar Heroes (USA).bin is the intended base ROM.

Hashes:

Database match: Gunstar Heroes (USA)
Database: No-Intro: Genesis (v. 20210226-213851)
File/ROM SHA-1: 7721E302555F16E3242AD4A47ED87A1DE1882122
File/ROM CRC32: B813CF0D

Staff/Credits:

Ryu for hacking, translations, and playtesting.
BillyTime! Games for hacking.
Marcomix for the instruction manual.
Wave for TBL files.

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.