Luigi is Mario's taller, but always second best, younger brother. He first apeared in Mario Bros. Luigi is also a playable character, but can only be played by the 2nd, 3rd, or 4th player in the game. He also appears in a "Luigi Help Guide" that can only be accessed when in one-player mode, after you have failed a level seven times. The Guide will play the game for you, and Luigi, and you may choose to try the level again or skip over the level and move on to the next. Levels completed with the help guide will glow red instead of the blue that copmleted levels glow. He will also not collect star coins or go in secret holes if not necissary.