BloodSpell is a 2006 fantasy film produced by Strange Company. BloodSpell employs filming techniques known as machinima, and is the first feature-length production to use BioWare's Aurora Engine, developed for the role-playing video game Neverwinter Nights, to generate the video portion of the film. The film was serially released in short episodes under the Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License, which allows for redistribution, modification, and creation of fan fiction. Strange Company have asserted somewhat controversially that, as of 2006, BloodSpell, was the largest machinima production. The series features numerous cameo appearances, including several voice appearances from science fiction author Charles Stross.