Metroid Revenge
Original title: Metroid
Platform: Nintendo Entertainment System
Region: USA (Update Hacks)
Media: Cartridge
Controller: NES Gamepad
Genre: Platformer 
Gametype: Hack
Release Year: 2007
Players: 1
Hacked by: L.Soft Hacks
Version: 1.0
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Samus has to go through another quest to stop Mother Brain. It is a level hack through and through. I wonder if it's harder?

http://www.romhacking.net/hacks/259/