Dr. Jekyll and Mr. Hyde (ジーキル博士の彷魔が刻 Jekyll Hakase no Hōma ga Toki?) is a 1988 side-scrolling action video game for the Nintendo Entertainment System loosely based on the novel Strange Case of Dr Jekyll and Mr Hyde.[2] Gameplay alternates between the characters of Dr. Jekyll and Mr. Hyde based on the player's ability to either avoid or cause damage.