The cast is made up of all children
The score was recorded by the London Symphony Orchestra.
There are only 7 actors/actresses in this entire movie, and all of them are siblings.
In their first movie, 'Runner From Ravenshead,' released in 2010, the five oldest Steege children's ages were listed: 2, 4, 6, 8, & 9. They started working on this second movie around the time Runner was released, but didn't release the movie until 2016. That means their ages vary in different scenes, since they spent years building, filming, and editing, but in 2016 they would be around the ages of 8, 10, 12, 14, and 15.