Rainbow Islands: The Story of Bubble Bobble 2 (Sega Master System)
Just a more colorful version of the NES port.
|Rainbow Islands: The Story of Bubble Bobble 2|
Press Left, 2, Right, Up, Down, Left, Right, 2 at the title screen. 2 increases the world number, and 1 starts the game.
Document it in the bugs page
The Brazilian release fixes a bug in the game that prevents the player from getting the "good ending" for the game.