This game is the eighth in the "Super Mario" series. It starts out when Bowser Jr. kidnaps Peach during a strange accident. Luigi can be played in this game, too. Luigi could not be played since "Super Mario World". This is the first game since "Super Mario World" (1990) that features the classic 2D play-style of the "Super Mario Bros." games. The game features a solo story mode with Mario or Luigi, a two-player wireless game Mario vs. Luigi, as well as a mini-game mode for up to four players. It was released in 2006 for the Nintendo DS. "New Super Mario Bros. Wii" is the sequel, though that game is not thought to be a direct sequel to the DS game.