If you loved Exists, try The Blair Witch Project
A bridge between a film you've already seen and one most people haven't. Here's what they share, and what the second one does that the first one doesn't.
What they share
Both films are directed by Eduardo Sánchez, and they both carry the dread mood tag, and they sit in Horror territory. If that's the register that drew you to Exists, the second film will land in a comparable space — through a different lens.
dread
What The Blair Witch Project is
Maryland woods. October. Crunch of leaves. Three young filmmakers hike into the forest to document local Blair Witch legends. They vanish, leaving only their cameras behind. Found footage horror perfected a house style still felt today.

