This movie shares several similar characteristics as The Judas Syndrome series' book one. There is a nuclear 'war' and a select group of people are followed as they survive the initial blasts in a bunker -like basement of their city apartment. Though The Judas Syndrome follows 14 teenagers as they survive the Nuc's at a country retreat, the psychological experiment of placing people in this extreme scenario ought to cover several of the same themes.
It will be interesting to see which version people find more honest, and I invite you to leave your thoughts on this here.
Watch the trailer for The Divide
Then Visit the website for The Judas Syndrome