Lost Levels is the sequel to Super Mario Bros. It is so hard that Nintendo didn't want it to be released in America. There are twelve worlds, the eight normal ones, and worlds A, B, C, and D. A, B, C, and D are really hard to find and hard to complete. The power ups are the Mushroom, Poison Mushroom, Star, and Fire Flower. However, Fire Flowers are a lot rarer in this game than they were in the original. The final level, 8-4, has two Bowsers. A new feature is the wind in some levels that can help you across chasms or kill you. The playable characters are Mario and Luigi.