Rampant is a South Korean period action zombie film directed by Kim Sung hoon. Shim Sun ah from Yonhap News Agency gave a mixed review and wrote, "Rampant has a promising premise, but it is a bland film that is marred by a .Top Critic. While Rampant is all right with genre beats the movie easily lapses into extended stretches of generic boringness. | Full Review. Rampant Chang gwol Film Review. PM PDT by Elizabeth Kerr. FACEBOOK TWITTER EMAIL ME. Courtesy of Bravos Pictures. Hyun Bin .