Dang! Where was this book when I was younger??!? For being a few decades old, it really hasn't aged much! This psychological teen read throws five 16 year old orphans into a weird uninviting alien environment filled only with stairs. None of them know why they are there or how to escape. They wander around and find a weird machine that will give them food, only when they figure out how to meet it's weird demands. It's the 5 of them against this weird environment, what will happen if they stop working together? Why are they there? What is the point? It is very reminiscent of Lord of the Flies, just maybe a little more futuristic. A weird, interesting, and compelling read. I dig it.