Sitges, an international festival specializing in fantasy and horror films, marked its 50th anniversary this year.
The Òrbita award is given by a jury comprising the audiences of selected feature-length films of all nationalities previously unreleased in Spain.
The film competed against Takeshi Kitano's "Outrage Coda" and Taylor Sheridan's "Winder River".
"Battleship Island" depicts the plight of Korean slave laborers on Hashima Island in World War II.
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