Maze Runner

A boy wakes up in a world with no memories in a world he does not understand. He discovers that it is a world with just boys. A new one comes every month. They get electricity and other basics provided for them. However, they have to work to provide food and solve a maze. They hope to sometime escape and get out. However, many of the boys get attacked by monsters and die. Some get stung, but get an anti-venom that causes them to undergo a changing. They get some of their thoughts back.
One day a girl appears, bringing on the beginning of the end. They finally make their way out of the maze, only to find it was part of a horrible experiment. The earth has been smitten by a plague. The maze was set up by a company in hopes of breeding special humans that can help come up with a solution. Other humans help rescue them. (This all seems to coincidentally come at the same time.)
The novel is very dark. These kids are locked in a fake world with real monsters with real death. Is this justified if it can bring about a cure for humanity? Ironically, the kids justify much to save a single boy, but find it abhorrent that they may all be sacrificed to save the human race. Does justification simply depend on free choice?