The film shares many commonalities with The Walking Dead (2010) in both setting and cast. Both take place in a post-apocalyptic Atlanta, and all three cast members have had roles on the television series (Riggs [Daniel] as Carl Grimes, Billingsley [Scarlet] as Theresa, and Van [Bearded Man] as the Hermit).
It is worthy of note that the title card of the film does not even contain images of the characters themselves or scenes within the actual film; they are head shots of cast members taken prior to production.
Terminus was actually a location on The Walking Dead show which all three of the stars of this film have been in.