A good piece of younger person's fiction. I found Katness to be a sympathetic character.
The action scenes were pretty exciting, and the non-action scenes didn't drag.
The big winner here is that Collins was able to maintain some romantic tension as well as non-romantic tension - it wasn't obvious (to me) who was going to live, who was going to die, and how everyone was going to feel about everyone else by the end.
The world and the game are a little unrealistic, but one has be willing to contribute a certain level of suspension of disbelief in almost any speculative fiction.
Anyhow, I'm keen to carry on.