Super Mario Bros. (スーパーマリオブラザーズ Sūpā Mario Burazāzu?) is a 1985 platform video game developed by Nintendo, published for the Nintendo Entertainment System as a sequel to the 1983 game Mario Bros. In Super Mario Bros., the player controls Mario (and in a two-player game, a second player controls Mario's brother Luigi) as he travels through the Mushroom Kingdom in order to rescue Princess Toadstool from the antagonist Bowser.