Duality is a Star Wars fan film created by Mark Thomas and Dave Macomber that made its debut on the internet on February 10, 2001.

[1] Sith apprentice Lord Rive (Dave Macomber), is tasked by his master, Darth Oz (Mark Thomas), to battle another apprentice, Darth Blight (Stephem Muraoka), as a final test determining who would serve by Oz’s side.

The final version took four months of post-production, using off-the-shelf software from Electric Image, Adobe, and Apple, and about in out-of-pocket costs.

[4] Entertainment Weekly said its effects "have the impressive digital sheen of Episode I",[5] while IFILM programming director said the film "absolutely blew me away, and a lot of people out there are saying this is the best they've ever come across.

Various members of the Star Wars fan films community felt that it was short on story and featured dated special effects when compared to other fan films, and that the trollish behavior of Mark Thomas leading up to its release forever tainted the product.