Primer

Few films play so ruthlessly with narrative structure and causality as 'Primer' does. Carruth's labyrinthine script is a puzzle that rewards obsession—time travel has never felt so mentally taxing. 'What if every choice creates a new path?'—this film runs wild with that premise.

Brace yourself for a quantum headache—this lo-fi powerhouse crams doctoral dissertations’ worth of paradoxes and technical jargon into its compact runtime. Bonus points for diagrams and wild Reddit threads.