Super Mario Bros. 2: 2nd Run
Original title: Super Mario Bros. 2
Platform: Nintendo Entertainment System
Region: USA (Update Hacks)
Media: Cartridge
Controller: NES Gamepad
Genre: Platformer 
Gametype: Hack
Release Year: 2001
Hacked by: Recovery1
Version: 1.0
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This is a hack of the original SMB2 game with new levels. The idea behind this hack is that it's the same SMB2 game we all love, but with entirely new levels. Game difficulty is easy to moderate but rises from moderate to nightmare for worlds 6 and 7. Ain't that nice?

http://www.romhacking.net/hacks/180/