There are alternate cover editions for this ASIN here and here.

When the lift cranks open, the only thing Thomas remembers is his first name. But he's not alone - an army of boys welcomes him to the Glade, an encampment at the centre of a terrible maze. The Gladers have no idea why they're there, or what's happened to the world outside. All they know is that every morning when the walls slide back, they will risk everything to find out.