Cruel Reality: Games of Life and DeathC. J. Whitley2016

Taken by masked men in the night, a host of British people find themselves at the mercy of unknown abductors. They cannot guess where they are going, or why they are going there. When they find an arsenal of medieval weapons in their new prison, horrific possibilities are imagined. When the cruel reality of their fate is revealed to them, they must learn a new way of life.
Fight or die. There is nowhere to run.

Titre original : Cruel Reality: Games of Life and Death (2016)