To unlock this world, you must beat the boss of World 2-Castle as Mini Mario. In these levels, do not fall in the water as it is poisonous.
World 4-1
Head right and you will pass a lot of spiders. Dash and jump to grab the first Star Coin, or jump on the spiders to grab it. Jump onto the blue dinosaur-thingy and let it carry you. Jump onto the first platform of blocks you see and then jump for the second Star Coin when the blue dinosaur-thingy is beneath it. For the alternate exit, hen you see a platform of five blocks, jump onto it. Head to the middle of it and jump up to reveal a secret block. Climb the vine and go in the pipe. Finish the level to unlock a Green Mushroom Shop. Otherwise, continue the level. At one point, you will see the third Star Coin. Remove the spiders and then run across the yellow blocks to grab it. Jump quickly onto land to avoid falling in the water.
World 4-2
When you see purple and orange mushrooms, be careful as they bend on whatever side you are. Head right until you see the first Star Coin. Wall-Jump to it (or use the blocks). For the second Star Coin, let the mushroom bend so that you can grab it and then jump quickly to the flat green mushroom. For the third Star Coin, go to the area with one glossy block and five coins a bit beneath it. Hit the block from underneath and then climb the vine. Climb the clouds and hit the block from underneath. Climb the new vine and jump for the third Star Coin. Then head down the green warp pipe and finish the level.
The remaining World 4 Level guides are coming soon.
