Slack Bay premiered in official competition, and is about the disappearances of tourists from a picturesque coastal community in the north of France in 1910, and the increasingly bizarre behaviour of the local townsfolk.
The film had a theatrical release in the UK and Ireland earlier this year through Universal Pictures, where it had the highest opening ever for an Irish documentary.
The latest installment of the X-Men series, again directed by Bryan Singer, bowed on 272 screens and rang up around $6.4 million over the weekend.
The series will air in Britain later this year, following the show’s world premiere on SundanceTV in the US on June 1 and on the ABC in Australia on June 2.
Amazon will release the film in the States in the second half of the year.
Captain America: Civil War is still going strong after three weeks at the Australian box office, dropping thirty-seven percent to gross $3.8 million over the weekend and bring its total box office to $28.7 million.
Captain America: Civil War rang up more than $6 million over the weekend, dropping fifty-seven percent in its second week to bring its cume to $23.3 million.
Pecotic opened the annual Independent Cinemas Association of Australia, which wrapped up today.