Fifty people wake up in a darkened room, arranged in two concentric circles around a black dome. Noises sound when they attempt to move or touch the others. When someone ignores the warning and leaves formation, a beam from the dome kills them. As the others panic, a man attempts to calm them. In mid-sentence, he is killed by the device. Thereafter, every two minutes, another person is killed. After several people die, they realize they can vote for who dies. When nobody votes, one is selected randomly.
The movie is literally just this - people talking, arguing, discussing, who should die next. It's fantastic and very much reminds me of the discussions that occur in games here.
There are actually a lot of times when I come across situations in movies or tv shows where I'm like, ok so it's basically mafia