What is "galax-arena"

Galax-Arena, by Gillian Rubinstein, is a 1995 science fiction novel following 3 children who are kidnapped by aliens. It deals with issues of slavery, what we know versus what we believe to be true, the difference between children and adults, street people (children), and spirituality, to an extent.

A sequel, Terra-Farma, was also published. It continues the story of Joella and her siblings after they leave Galax-Arena, and follows their further brushes with Project Genesis Five, the organization who created the Galax-Arena. There was going to be a third novel called Universercus that would conclude the trilogy, but it was never published.