Bubble Bobble Hack
Original title: Bubble Bobble
Platform: Nintendo Entertainment System
Region: USA (Update Hacks)
Media: Cartridge
Controller: NES Gamepad
Genre: Platformer 
Gametype: Hack
Release Year: 2002
Hacked by: John's Program
Version: 1.0
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Graphics have been changed, and all 100 levels have been edited. Music has also been improved. It's a new adventure for both Bub and Bob.

http://www.romhacking.net/hacks/196/