New Super Mario Bros.

Do you mean the castle where you fight Skeleton Bowser? If so, what exactly are you having trouble with?

that's a very generic question. Can you give us a little more information on what part you're stuck on? Also, are you talking the second mini castle or the usual boss castle with the blue roof?

If you tell me what part you're stuck on I can tell you how to do it.

okay if its the ver llast cstle the huge on that scares the crap out of you. Then put a mega mushroom in the bottom right circle.(by going to a mega mushroom house).Then use it in the boss fight and just jump on both of them. OR if your at the mini castle. At the boss fight just be flower or any other form of mario tht doesnt get killed on one shot from an enemy, and just smash into the skeleton bowser and continue to the button at the back and jump on it. hope that hepled.

there r 4 castles but i will try to help.
Bowser Jr castle 1. get through everything then beat him as usual
normal castle#1 get through it extremely cautiosly. boss is invincible except for with a
mega mushroom
b.j. castle # 2 this one ****** me off. try to stay on the green squares as much as possible
beat b.j. as normal.
final castle - first half is a very easy puzzle. dont get flamed or smashed though.
secolnd half is pretty veasy ( spoiler alert ) when u get to the areas that make noises as
u go through them this is the combo 1st area bottom
2nd top
3rd middle platform
beat B.J. and Bowser with a mega mushroom.< big orange ones that make u huge.>
hope that helps

The last castle of the game is simple. Beat Bowser Jr. as usual, then when you do all you have to do is wait for the big dragon to jump up and run underneith him and jump on that thing at the end of the bridge and he will fall in the lava.

If you mean the 3rd one use action replay,turn on;big jumps(hold it and it makes you fly)and invincible.

Play through it.

Be moar specxific pl0x.

And turn on invincible

Can you please tell us what castle it is because we are all confused? Thank you.

I have the same problem the one with green that is so hard they give so little time when you need a hour so we both need help so thanks.

If this the mini castle no.2 Then heres a walkthruogh 1st get on the mad green squares then only hit the question mark box and then wait for the mushroom then jump on to the lv2 squares well im bored if you want help go on www.meebo.com