In the New Super Mario bros. on Nintendo wii. Go to World 3. Go to the Haunted house. Play that level. Look for ledges or stands or a floor that comes straight up. If a flash light comes up on the ledge thing, go into the door. You will go to a moving floor. Alot of ghosts will be around. Go until the floor stops falling and when it does stop, There will be a door. Go into it. Go a little bit farther. You will come to a tall flag. It should be red. If the tall flag is black, you go to the Toadhouse. Try and find the RED flag.
IF the flag is red, a new path will come. It will lead to the World 3 cannon. Go to the cannon. Play it. Jump into the cannon that says: "World 6" You will go into the air and land in world 6. Then first time you use the cannon, somthing will say "do you want to save?" click yes. You will have world six.
look up super Mario bros Cannon world 1 and level 1
First, have the adult Mario and Luigi use the Bros. Ball and have them roll into the cannon. Then, have the babies hit the switch, and the cannon should launch Mario and Luigi.
Luigi is the only cannon family member of Mario in the Nintendo universe. Unless your talking of another Mario.
World 7
give up.
get the world 5 cannon
You have to get the secret exit's in every world and the secret worlds
get the cannon in the worlds
you cant
in world 1 at the tower there is a red flag that you need to get to unlock the cannon.
The cannon in new super Mario bros takes you from one world to another without having to complete the world (ie it shoots you into another world)
Theres a secret exit in the fortress