If you haven't seen it yet, check out the movie Coherence (2013)! It's one of my favorite sci-fi movies. The actors were taken aside and given certain direction but were never given a full script, so every time you see them arguing or trying to figure out what's happening or surprised by something, it's all genuine.
Here's the synopsis but don't read anything else about it before you watch: [Synopsis: Strange things begin to happen when a group of friends gather for a dinner party on an evening when a comet is passing overhead.]
It's free if you already have Amazon Prime. A fantastic sci-fi puzzle to solve (similar to Primer in that way but very much its own thing).