Trivia
The method by which the dragons expel fire was inspired by two actual animals; the spitting cobra and bombardier beetle.
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It was filmed in Ireland, in the Wicklow Mountains. They were only allowed to film there under the condition that they clean up entirely after themselves, without damaging the landscape.
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The preview claims that the film is set in 2084. Yet the actual movie itself gives the date as sometime in the 2020s.
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Matthew's character "Denton" tells his men to line up 20 yards South by Southwest; being a Texan he is referencing Austin's annual music festival, South by Southwest (SXSW).
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