In which game did the character "Mario" make his first appearance?

Mario made his first appearance in the game "Donkey Kong" because it was the first game in which the character Mario, originally known as Jumpman, was introduced to the world. In this classic arcade game released in 1981, Mario's goal was to rescue his girlfriend Pauline from the giant ape Donkey Kong by navigating through various levels and obstacles, marking the beginning of a beloved and iconic video game franchise.