Tunnel Rats, also known as 1968 Tunnel Rats, is a 2008 German-Canadian war suspense film written and directed by Uwe Boll. The film is based on the factual duties of tunnel rats during the Vietnam War. In a documentary for the film, Boll revealed the film really did not have a script, and instead the actors are improvising their lines. Although a box office failure, Tunnel Rats was met with positive reviews.