Zombie movies rarely use space to their advantage, but Train to Busan understands that being trapped on a train with the undead is a whole lot scarier than watching them amble through city streets. Set entirely on a bullet train, the movie not only capitalizes on the claustrophobic nature of its setting, it also plays up the tension among the passengers as they fight to survive in such tight quarters.
Watch Train to Busan on Shudder.