Hard Choices 'What happened on Algol?' is a 32-page graphic novella prequel to Ultramarines: A Warhammer 40,000 Movie written by Dan Abnett, released as part of the Special Edition DVD on 29 November 2010. Hard Choices is a military science fiction story set in the Warhammer 40,000 universe, the protagonists being Space Marines from the Ultramarines Chapter. Source: Wikipedia (en)