Toad's Adventure
Original title: Super Mario Bros.
Platform: Nintendo Entertainment System
Region: USA (Update Hacks)
Media: Cartridge
Controller: NES Gamepad
Genre: Platformer 
Gametype: Hack
Release Year: 2005
Hacked by: Omniverse
Version: 2.0
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A complete and total conversion for Super Mario Bros, in which you star Toad. New levels, graphics, and even some small sound and ASM changes.

http://www.romhacking.net/hacks/86/