Movies about parallel universes/paradoxes

Hey all! I'm trying to find some new movies that I haven't seen that deal with parallel universes or time travel. Say, maybe like Inception

One im specifically trying to rewatch is hanging on the the tip of my brain, and I can't think of the name ...It was about a comet, and a group of friends were having a party to celebrate. It opened up a warp to different parallel universes, and they were murdering each other's doppelgangers and coming back in the house like nothing happened. Any help would be appreciated!

Update The movie i was looking for is Coherence. Anyone into this genre of movies should absolutely check it out. I'm still looking for other options... Thanks in advance!