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I haven't done it yet, but you're supposed to collect all 120 stars. After that, the Canon should be open. Also, you're talking about Super Mario 64 right, because that's the only "canon outside the castle" I know of. Anyway, there you go.
What else can I help you with?
How do you unlock the cannon outside the castle in super Mario 64ds?
it is not stars it is a world
How do you unlock the cannon outside the castle in super Mario 63?
Get 63 shine sprites, there are actually 64 shine sprites but that last one, you can only get it if you've had the cannon open, because it leads you to the shine sprite if you use it.
How do you unlock level 7-6 in Super Mario Bros Wii?
By getting a cannon or by winning the fifth castle and then the sixth castle.
On super Mario 64 how do you unlock the cannon outside?
Get all 150 stars
How do you open the cannon outside the castle in Mario 64?
You open the cannon by getting 120 stars. After you've gotten 120 stars, you can go outside and fire the cannon. You do not need to find a Bob-omb buddy.
How do you unlock the cannon outside the castle in super Mario 64ds?
it is not stars it is a world
How do you unlock the cannon outside the castle in Mario 64?
Collect all 120 stars.
How do you unlock the cannon outside the castle in super mario 64 DS?
Im not sure but I think you have to get all 150 power stars.
How do you Unlock the cannon on world 4?
You go to the midway castle
How do you unlock the cannon outside the castle in super Mario 63?
Get 63 shine sprites, there are actually 64 shine sprites but that last one, you can only get it if you've had the cannon open, because it leads you to the shine sprite if you use it.
How do you get on top of the roof of the castle in Mario 64 ds?
get all the stars to unlock the cannon
How do you unlock th castle connon in super Mario 64 for ds?
you need all the stars,in this case a 150 stars then you go outside the castle the cannon will open and you can shoot yourself onto the castle roof were a wing cap,3 1ups,and yoshi.
How do you unlock level 7-6 in Super Mario Bros Wii?
By getting a cannon or by winning the fifth castle and then the sixth castle.
On super Mario 64 how do you unlock the cannon outside?
Get all 150 stars
How to get to the top of the castle in Super Mario 64?
After collecting all 120 stars, a cannon will appear outside of the castle. Use this cannon to blast yourself to the top of the castle. At the top of the castle, you'll find Yoshi, who will give you 100 extra lives.
How do you open the cannon outside the castle in Mario 64?
You open the cannon by getting 120 stars. After you've gotten 120 stars, you can go outside and fire the cannon. You do not need to find a Bob-omb buddy.
I got all 120 stars but it won't let me unlock the outside cannon?
You need to get 242.
