Super Mario Bros. 3
This game was the sequel to Super Mario Bros. 2, which went in a different direction with it's gameplay than Super Mario Bros. Nintendo decided to return to a more traditional platforming style for this game.
Bowser had kidnapped Princess Toadstool and transformed the kings of each world into an animal. Mario and Luigi (if you play with a second player) fight their way through nine worlds. At the end of each, they fight one of the Koopa Kids until you finally get to Bowser. Each world had a different theme and different enemies to go with it.
Although Nintendo decided to go with a more traditional gameplay, they did add new powers for Mario. Among the most memorable were Raccoon Mario, the Frog Suit, the Tanooki Suit, and the Hammer Bros. Suit.
