<ul><li>Three underrated sci-fi movies on Amazon Prime Video that are free to stream this month: Dark Skies (2013), Leviathan (1989), and The Mandela Effect (2019).</li><li>Dark Skies (2013) follows a suburban family experiencing strange events tied to possible alien encounters, offering suspense and intrigue.</li><li>Leviathan (1989) is a sci-fi horror movie set in an undersea mining operation that encounters a Soviet shipwreck, providing a blend of suspense and entertainment.</li><li>The Mandela Effect (2019) explores the psychological phenomenon through a grieving father who questions reality and believes he is shifting through parallel universes, seeking his daughter.</li></ul>

3 free underrated sci-fi movies on Amazon you should watch in May 2025

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