The Legend of Zelda: Gannon's Revenge
Original title: The Legend of Zelda
Platform: Nintendo Entertainment System
Region: USA (Update Hacks)
Media: Cartridge
Controller: NES Gamepad
Genre: Adventure 
Gametype: Hack
Players: 1
Hacked by: Rage Games
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This new version of The Legend of Zelda features a completely altered overworld, with new item placements and increased difficulty. 

http://www.derok.net/nes-roms/legend-of-zelda/gannons-revenge