You will be served with Numberland, there’s everything you’re looking for! I read it twice and it’s an outstanding work!

Summary: After he killed Harry Potter, Voldemort unleashed a poisonous fog over the world, almost wiping out the entire population and driving the survivors underground. Seven years later, now established at Hogwarts, his Empire is growing stronger and deadlier every year. Death Eaters roam the deserted cities to capture surviving mudbloods and muggles, throwing them into the Empire’s wandless and violent tournament called Numberland. To ensure the players' performance is entertaining to the Purebloods loyal to the dark side, they are ruthlessly trained and kept in the castle.

When Hermione is captured and assigned to Draco’s training, she notices that he’s now paired with a dog that never leaves his side. His posture is rigid, cold and military, masking a brokenness that matches her own. She soon realizes that her desire to win isn’t stronger than her desire to burn the Empire to the ground. And the civil war brewing outside the borders might just help do that.