the blue shell doesn't do anything i dont think

it does somthing if you press down you go in the shell to hide from enimies
and if you run for a little bit you will go in the shell and start moving across the
screen like a coopa when you jump on it two times and you just hit the enimies when your
going across the screen and they die

MAkes u titchy

it makes u hide

you'll need a blue shell for secret exit somewhere in world 5

you know the spikey belts in the purple castle in world 3 if you press down you will be
invicible to the belts. In other words you be protected from the belts.
Hope i helped:)

It also helps you swim faster

well if you speed run (B+forward) you go really fast and you can even jump while power
sliding. and you swim faster but when you duck you can still easily get hurt and loose it.

The shell is usefull and sometimes...dangerous!

the blue shell is very useful cause it gives the power to do a shell run and broke blocks
that u can't break without the shell

in the first tower (w1) in the door that u can only reach if u go into that tunel where u
get the 2nd coin don't go into the door instead go to a moving stone that is moving slower
than the others go right and u will find a secret p***age use the shell run and go against
those blocks and enter the tunnel after those blocks and u will find a red flag!!

if you get a sparkly blue shell touch it and you will turn into shell mario.
ps i hit a gommba (brown mushroom thingy)with fireball mario and it killed him bat he also
touched me wile he was dieing and he got rid of my fireball mario!

if you get a sparkly blue shell touch it and you will turn into shell mario.
ps i hit a gommba (brown mushroom thingy)with fireball mario and it killed him bat he also
touched me wile he was dieing and he got rid of my fireball mario!

go insane

You can slide and get to secret exits when you have a blue shell.
Blue shells are very useful but in Mario Kart DS, I would avoid them!

they greet!!

get shell
1.to slide like red or green shell :move and hold Y whith the shell on.
cotion can be fadel
2.proteted:hit down button{hold}
3.all over the place:do #1 but press B to jump