A review by vkemp
The Roar by Emma Clayton

4.0

Ellie and Mika are twins; Ellie has been kidnapped by Mal Gorman. It is the future and after the Animal Plague, all humans retreated behind high walls to escape. Mal Gorman has devised a plan to send all children to war, but first he must find the children who are mutants, such as Mike and Ellie. Part of the plan requires a contest where children fly Pod Fighters in arcades; as they progress, the tests get harder and harder. Mika can still sense Ellie and he knows by winning the contest he can be reunited with her. What actually lives outside The Wall? No one knows until Mike escapes.