[7] After Reeves agreed to produce with Hamel and star in Passengers,[8] Spaihts was commissioned by Scott Free to write the next installments in the Alien saga, two prequel films to be directed by Ridley Scott, which eventually turned into the more autonomous story Prometheus, ultimately revised by Damon Lindelof.
[9] For New Regency Spaihts also wrote the screenplay to the alien invasion thriller The Darkest Hour, based on a story by Leslie Bohem and M.T.
[15] The rights to his early science fiction screenplay had originally been sold to the Weinstein Company, with Keanu Reeves and Reese Witherspoon set to star, and Game of Thrones director Brian Kirk at the helm.
[17] In 2018, it was revealed that Spaihts would be co-writing Legendary Pictures's feature film adaptation of the science fiction novel Dune, alongside Eric Roth and director Denis Villeneuve.
[18] For his work on Dune, Spaihts was nominated alongside Roth and Villeneuve for the Academy Award for Best Adapted Screenplay.