Simon Wolfe of Capsule Computers writes:
"Deunan and Briareos are back again, but anyone that has already seen the thirteen episodes of Appleseed XIII, may not find exactly what they expect. While condensing down a full anime series to a movie or two, so there is a better focus on the main plot or provide a simplified experience for the viewers, is not a new idea; more often than not studios will have an OVA to top off an anime series or provide a final hurrah from somewhere during the main story. Appleseed XIII however gets the condensed plot two movie treatment with Tartaros and Ouranos. What aspects of the story will be saved for the movies and what will hit the cutting room floor to keep these movies down to a reasonable length? Let’s take a look at what Tartaros and Ouranos have to offer."