I was drawn to this book because of its similarity to the hunger games - 7 contestants go in, only 1 comes out. When I found out that 6 of the contestants were aliens, I almost threw the book into the fire. Thank god I didn't! It was a bit slow at the start, but when it got going I couldn't put it down! And each chapter would end with a cliffhanger so I had to keep reading late into the night. The best bits were the scenes involving the elevators. I was sitting on the edge of my seat not knowing what would come out of the elevator, or what floor it would stop on. So suspenseful!