Bonus Stage (Hello Kitty World, Famicom)
The Bonus Stage is a bonus room in Hello Kitty World. It can be accessed by entering rooms with a strawberry icon throughout the regular stages.
In the Bonus Stages, Hello Kitty must gather balloons that come out of pipes. If Hello Kitty collects all balloons, she can get a heart that will give her an extra life.
In the original games (Balloon Kid/Balloon Fight GB), the Bonus Stage is themed on a Game Boy instead.