This is a difficulty patch for Super Metroid that should be compatible with every hack out there besides Control Freak. 

There are four versions of the patch which include the following options: 

Dealing 50% damage and receiving 200% damage
Dealing 75% damage and receiving 150% damage
For hacks with Ceres Space Station intro
For hacks without Ceres Space Station intro

These were designed with begrimed's excellent Project Base in mind and the 50%/200% version of this patch was play tested and should be optimal with that hack. 75%/150% would be the recommended option for the original game.

***Please note: difficulty changes will not kick in on existing save files. Starting a new game is required.

Hell mode is toggled in the special setting mode menu under what was previously the icon cancel option. Under the save file, "Mode H" will be displayed to confirm the setting is active.

This code was written by PHOSPHOTiDYL. Concept was a collaboration by PHOSPHOTiDYL and Chicken Knife.