It starts out like Arrival, so I wasn’t expecting it to turn into a straight-up horror movie about half way through. That being said, I really enjoyed the ride. It’s beautiful to watch and riveting to think about, keeping its slow pace rich with engagement. It’s great an it’s clever, ambiguous in places but becoming more clear the more you think about it. Even the way the story jumps around is part of the narative iteself. The ending is pretty trippy and psychodelic, putting it squarely in the high concept sci-fi category, but if that’s your jam and you’re ok with the horror elements then definitely give it a watch.
Closest comparison: Arrival, then a Quite Place, then The Fountain