"New Super Mario Bros. Wii" is a platform video game developed by Nintendo and released in 2009. It features Mario, Luigi, and two Toad characters as they embark on a quest to rescue Princess Peach from Bowser. The game is known for its classic side-scrolling gameplay, vibrant graphics, and cooperative multiplayer mode, allowing up to four players to join the adventure. Players navigate through various worlds filled with enemies, power-ups, and hidden secrets. The game introduces new elements like the Propeller Mushroom and Penguin Suit, enhancing gameplay mechanics. "New Super Mario Bros. Wii" received positive reviews for its nostalgic feel and engaging multiplayer experience.