"Super Metroid Redux" is an improvement hack for Super Metroid, and a continuation of "Super Metroid: GBA Style".
This hack aims to give Super Metroid a whole lot of improvements, being it graphical or in mechanics/gameplay, and address some of the annoyances from the original.

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Changelog:

* All of the improvements/changes made for Super Metroid: GBA Style
* A lot of features from Project Base 0.7.3 have been implemented.
* Normal and Hard mode can be toggled within the “Difficulty Settings”
* Special Demo sequences that depict useful tricks and abilities (from SM Turbo)
* Message boxes can be skipped by pressing a button
* Screw Attack now destroys frozen enemies (by Adamf)
* X-Ray Visor range widened
* Unlock Tourian patch has been completely fixed
* Charge Beam combos can be triggered by fully charging your beam with the beam of choice, and then pressing Select
* Crystal Flash is still enabled like in the original
* Elevator Speed has been increased to double the speed of the original in Super Metroid
* MSU-1 playback integrated
* Missile Stations have now been changed to Recharge Stations. They now refill your entire weapons’ stack (Missiles, Super Missiles, Power Bombs) upon touching them with the message “Weapons Reload Completed.” (similar to Zero Mission / Fusion)
* Power Bombs reveal hidden tiles (like in Zero Mission / Fusion)
* Fanfare music for normal expansion tanks (Missiles, Super Missiles, Power Bombs, Energy and Reserve Tanks) now use a special SFX when grabbed which is shorter, to allow for a more fluid play session.
* Combined DC’s Map Patch with Scyzer’s Item Circles code to create a revamped Map similar to what is seen in both Zero Mission / Fusion.
* Some optional patches to allow for customization

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For the full list of changes, please visit the Romhacking.net page:
https://www.romhacking.net/hacks/4963/