Zombie apocalypse movies have become an increasingly popular sub-genre of horror over the last 50 years. From plots covering an outbreak on a normal day to years later adapting to a new world dominated by flesh-eating undead, the survivalist elements continue to fascinate us. But what are the greatest zombie movies of all time? Film fans have ranked the very best on IMDb, and incredibly, 28 Years Later’s predecessor, 28 Days Later, was only at No 7.