How do you unlock world 4 and 7 on super Mario bros on the ds?

Answer 1

To open the world 4 cannon in the Super Mario brother's game DS, you have to enter through the last level of world 2. Make sure you have a blue mushroom, which makes you smaller. You can do everything in this level normally until you get to the end. There will be a Caterpillar-like creature waiting for you. You have to turn into a smaller version of Mario (using the blue mushroom) and defeat the creature. After you are done, the sign which says world 3 will turn around and read world 4. You will automatically go through a small hole and will appear in the exciting jungles of world 4.

Answer 2

Beat the World 5 boss as Mini Mario the whole time. Or, use the Warp Cannon on World 4.

Answer 3

The way to unlock World 4 is to beat the boss in the castle of World 2 with Mini Mushroom. The way to unlock World 7 is to beat the World 5 boss in the castle with Mini Mushroom.

Answer 4

To unlock world 7.... You need to defeat the boss at the end of world 5 as mini Mario ( or Luigi!)

Answer 5

go up, dow, left and right and go through the gate while pressing start!

Answer 6

For World 4:

-Beat World 2 boss with MINI MARIO

For World 7:

-Beat World 5 boss with MINI MARO

-Unlock the cannon on World 4

Answer 7

Beat the World 2 Castle as Mini Mario.