nsmb how to get to world 4?
['Go to the final castle level in World 2. World 2 is the desert world. ... ', 'Get the mini-mushroom. You can find the mini-mushroom towards the end of the castle level. ... ', "Get to the end of the level as Mini-Mario. There's another power-up later in the level. ... ", 'Defeat the worm as Mini-Mario.']