They could also be about the making of balloons. Maybe a story about a balloon maker who carefully crafts each balloon, choosing the colors, inflating them just right, and then sending them out into the world to be part of someone's special moment.
Mostly, balloons in GTA Vice City Stories are for decoration. They help to create a more festive and lively environment in the game world. However, in some cases, they might be used as part of a visual cue for a mission or event. For example, if there's a party - themed mission, the balloons could be used to mark the location or to give a sense of the celebration that's going on. But overall, their main purpose seems to be decorative.
A wedding planner's use of printed balloons was quite impressive. They printed the couple's initials and wedding date on the balloons. The balloons were then used to create a beautiful arch at the entrance of the wedding venue. It made for a very romantic and personalized touch that the guests loved. This led to more referrals for the wedding planner as everyone was talking about the unique balloon decor.
Popping 99 red balloons in Vice City Stories could involve completing certain challenges or following a specific sequence of actions. Maybe you'll need to unlock certain areas or acquire special abilities first.
I don't know the author of the '21 balloons novel' off - hand. However, you could try looking it up on a book - related website or asking at a local bookstore. They might be able to tell you who wrote it.
The '21 balloons novel' tells a story where the balloons are central elements. It might be about a character who embarks on a journey with these 21 balloons. Maybe the balloons lead the character to an unknown land, or they are used in some sort of scientific experiment that forms the basis of the story's plot. There could be a lot of elements of mystery and exploration in it.
One hint could be to look for places with a lot of bright colors and activity. Since balloons are often associated with fun and celebration, areas like the fairgrounds or large public squares might be good places to check.