Coherence & Triangle
Lovely little Sci-Fi conceit here. Benefits from good performances from the ensemble cast and a low budget which keeps everything taught and lean.

"On the night of an astronomical anomaly, eight friends at a dinner party experience a troubling chain of reality bending events. Part cerebral sci-fi and part relationship drama, COHERENCE is a tightly focused, intimately shot film whose tension intensely ratchets up as its numerous complex mysteries unfold" - Rotten Tomatoes 88%


I also recommend Triangle which explores similar concepts but is more horror-tinged. A cool little Indy with some gut punches.

"The passengers of a yachting trip in the Bermuda Triangle are struck by mysterious weather and must jump to another ship only to experience greater havoc." - Rotten Tomatoes 82%
( Hitler's Barber Soylent Green is high in saturated fat, Mon 25 May 2015, 9:01, Reply)