Donkey Kong is an arcade game developed by Nintendo, released in 1981. It is an early example of the platform genre, as the gameplay focuses on maneuvering the main character across a series of platforms while dodging obstacles. The storyline is thin but well-developed for its time. In it, Jumpman (now known as Mario) must rescue a damsel in distress, Lady (now known as Pauline), from a giant ape named Donkey Kong. The hero and ape later became two of Nintendo's most popular characters.