Animal World (Chinese: 动物世界; pinyin: Dòngwù Shìjiè), also known as Animal World: Mr. Nobody, is a 2018 Chinese action-adventure film written and directed by Han Yan, and starring Li Yifeng, Michael Douglas and Zhou Dongyu.[2][3][4][5][6][7][8] It is based on the manga Kaiji by Nobuyuki Fukumoto.[9][10] Animal World is produced jointly by Shanghai Ruyi Film Production Co., Ltd., Shanghai Pitaya Film Production Co., Ltd., Tencent Pictures, Jixiang Films, Fire Dragon Guo Pictures, Youth Enlight and Enlight Pictures.