CheatCodes.com has all the official Mario & Luigi: Bowser's Inside Story DS cheats to unlock everything. If you know of any that we don't have, please let us know.
All published and official codes as of Saturday May 18, 2013 for Mario & Luigi: Bowser's Inside Story are shown below.
To get magic window find a underground room in bowser castle with a circle button a square button and a triangle button. There will be a sign that sais o is one less then square, and triangle is one more then square. It means (circle, square, square, trianglex3 press button on door) or (circle triangle triangle triangle, square square, door button) it is one of these and after you finish and get the correct one you will open a freezer full of awful machines and toad things. Push the button on the left and it will unfreeze 3 aliens mario and luigi fought as a child. Once you defeat them you will get 10 attack pieces with the ability magic window.
Go to the airway and fight EVERY monster in every room for mario and luigi and once you get out go outside peaches castle and train on metal mawful moles or mechawfuls and once you are finished go back to the airway and go the whole thing all over again until level 50 or 40 is reached. And for bowser train in bowsers castle and/or inside peaches castle it will not be easy though you must bring good gear and items.
Get at least 40 level points with each character and win the final battle. The mysterious voice should be amazed by you and will congratulate you. [NOTE]You can get more level points to become stronger.
Sometime later in the game mario and luigi are allowed outside of Bowsers body (after the blorbs are cured). When you unlock the yellow pipe go through it and you'll find yourself in Toad Town. You are on the east side of the mall, go left and you'll be on the west side (this is importent). Go down from the pipe and go left to the badge shop. Just outside the store there is a small blue toad. Talk to him and he says his parents are boring and he wants you to play hide and seek with him. Say yes and he'll run and hide. Go up and right, now even though the blorbs are cured you'll still see a REALLY fat toad (he says that's the way he normally looks. He must not exercise at all! ) Anyway the small toad is hiding behind him. Then he'll run off again and then hide in the mushroom level shop. Then he'll hide again go into the west side of town. I had trouble with this one because when he leaves you see where he goes next. This time your in a shop so you only see him leave. But go into the west side and he's hiding behind a warp pipe (not one that leads into bowser). Find him and he'll run away again he is still in the west side though. This time he is in the shine sprite level shop. In the changing room (I've always had a hunch about that room! ) . (This is the last time he'll run off). He'll run to the east side of town again, and not only that but he's hiding behind the fat toad AGAIN. Find him and he's all WOW and you're all OH YEAH I'M EPIC! After you find him he'll give you a gear that nullifies damage once per turn!
Once you free Bowser from the safe he will tell you that his back hurts. Go to the room toadstool is in and he will tell you to drill into Bowser's back. It will take while. While you wait this is your time to rest yourself.
Pretty easy battle if you are level 18 or higher. No specials needed just jump on it or use hammer and it will fall easily. Challenge class 1. Reward 1000 coins.
Magic window and falling star is the only thing you need for this challenge. For mario use magic window on both memories then for luigi use falling star only on luigi Memorie X because hes the one who is most threatening to you. Class 4 reward 6000 coins.
If the circle on the Alpha kretin is red use jump with mario to it to be defeated, if the Alpha kretin is green use luigi to jump on it. Once it falls use any attack you think is useful. Challenge class 2 reward 3000 coins.
The only ability you need is jump/hammer magic mirror and falling star to have an easy chance of beating Junker X. First as Mario use magic window then use falling star as Luigi to weak him once he sends out the little junker X the junker will suck up Luigi free him and do the process all over again. Reward is 5000 coins level 35 or higher can enter challenge class 5.
By the time you have reached class 6 gauntlet node you should need only spin pipe, magic window, and falling star. Use magic window/spin pipe to beat the little Starmite X once they're beaten the dark star will become vulnerable for you to use Falling star many times while its down no other ability can be used while its down. Must be at least level 43/45 to be able to compete in challenge. The reward is 9000 coins for beating challenge class 6.
Beat all the monsters in airway and beat all challenge classes in gauntlet node you'll have money to buy A-Ok wear for mario and luigi!
Go to plaqe beach and find the house of kuzzle with mario and luigi. After you find him, he will give you a puzzle to do and if you complete it, the ability will be unlocked for you. And also to get another ability find sacks of puzzles and solve other puzzles to get another ability.
Go to challenge node in Bowsers body and enter gauntlet mode (must have beaten dark star in airway before entering) then beat all classes 1-6 (must be at least level 45 to finish) after that the final mode, class 7 will be open. Every enemy you have fought in gountlet will be in one battle no hp recovery, no sp recovery, and only few items allowed. You must be at level 53 or 55 to beat the final boss. Bowser X he is strong and he can defeat mario in an easy shot. Train in airway to have a chance in beating Bowser X.
A toad north of tea shop will ask you to find mushroom balls hidden around the mall no were else. You must search behind walls beside stairs and behind light posts and underground, these are hard to find there are 15. Happy hunting!
First you must talk to the toad that is in the waiting room in the hospital in toad town next he will tell you to get specials in plaqe beach and bowsers castle. You will need them both once you have gotten the special abillities, go to wisdurm, and begin the battle. Then everytime for mario use magic window (bowser castle ability) perfectly to achieve wisdurms second form. Then for luigi use spin pipe (plaqe beach ability) on wisdurms tail repeat and wisdurm will be defeated.
To get falling star: you must go to peaches castle (outside) and get the blue turtle shell that is bottom right of the castle map and hit the blue turtle block and use luigi to knock mario into the puzzle pieces you will get 7 and the flying blur shell koopa will ask for 300 coins agree and you will get the last 3 and have the falling star ability.
All you have to is go to "Energy Hold" then go to mirror screen and on the last one go all the way to the bottom and then turn OFF the light and hit the box.
Make the mario brother who usually gets knocked out slower wear hustle socks. If you flee, no fee! (even if the non-hustle sock werarer is Ko'd.
First you need to get your SHYGUY SQUAD attack with Bowser and at least 60 horn pts then when you battle him you have to keep getting EXCELLENT and eat his food when thrown onstage.
Once you get to the other side on the beach, walk forward and you'll run into a little block dude who'll ask for help. When you get him across, he'll give you a special attack that lets bowser inhale enemies.
When you get through the beach, bowser will run into a statue and keep punching it until it comes to life. When it does, make sure you have the vacuum block and inhale the squid once in a while and let Mario and Luigi do their thing.
To defeat the Robot like Mario and Luigi you have to use your specials. I suggest you use the super bouncer the most or if you want to you can use the fire flower instead.
In some part of the game, Bowser asks Chippy aka Starlow if she could go into his mind and get a safe combination. Before you get the combination, Mario and Luigi have to defeat these Robot like mind Mario and Luigi. After you defeat them you can get the combination.
Move Bowser onto the steel plate, punch the ball with the right timing and walk through the door.
To get Bowser's final special attack, Broggy Bonker, you must collect all the Blitties, the block kittens. If you need help finding the Blitties, talk to Brouque, as he will say a brief sentence of their wherabouts. Remember, use the Vacumn Block on EVERY enemy to check for Blitties. Broggy Bonker is the best special for Bowser, I am currently level 40 and it inflicts, on excellent, 750 HP! Makes the final boss to easy, though.
Alternate Ending Message Beat the game with Mario, Luigi, and Bowser all being at least Level 40 Alternate Ending Message Beat the game with Mario or Luigi at level 17 or lower Bro Socks Get "A" rank in Yoo Who Cannon Dizzy Boots Get "A" rank in Super Bouncer Challenge Medal Get "A" rank in Green Shell Advice Patch Get "A" rank in Spin Pipe Siphon Gloves Get "A" rank in Magic Window Daredevil Boots Get "A" rank in Jump Helmet Master Wear Get "A" rank in all challenges Treasure ring Get an "A" rank on the Goomba storm challenge Bone Fangs Get an "A"rank on the Koopa corps challenge Fury band Get an "A"rank on the Bob-omb challenge Heroic ring Get an "A"rank on the magikoopa challenge King Shell Get "A" Rank in all challenges
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