Dodge attacks
During a battle press [Attack] for Mario or Luigi to dodge enemy attacks.
Easy coins
When you are in the Thwomp Volcano, there is a part where you are supposed to get 30 gems in order to pass. When you finish it, go out then go in again. Step on the Thwomp and say "Yes" that you want to play. Get any number of gems, and if you do not get 50 gems you will get 20 coins. Repeat this to get as many coins as desired. Note: The game is free.
In Thwomps Volcano, when you first enter the dormant volcano, go right one screen (which you must do usually). At the area where you must spin your babies, spin them and only them. Leave the older Bros. at the top. When the babies get to the bottom, take the older Bros. back to the beginning of the volcano (left one screen) and get the babies back with the pipe block. Repeat this process, and each time you will get 70 coins.
Defeating the first Boss
Wait for the Shroobs to get a Poison Mushroom. The Boss will turn green. Then, start attacking him. Do not hit him if he is red.
Wait until one of the Shroob doctors gets a Poison Mushroom. Then, attack the one that has it. Use a Cannon Bros. item. It does 52 damage, and you can defeat the Boss very quickly. Attack him when green and hold back when he is red.
Defeating Bowser and Baby Bowser
Having lots of Ice Flowers is recommended. Once Baby Bowser uses his adult form as some sort of hockey item, use your hammer to smash it back to him, because he will continue to heal his adult form. If you succeed, Baby Bowser will miss hitting the adult form and he will be on his own for a small amount of time. Also get Red Peppers to increase your attack, and perhaps Blue Peppers to increase your speed. Give the Red Peppers to the adult Mario and Luigi and keep using Ice Flowers. An alternative is the Green Shell or the Pocket Chomp. If used correctly, there should be a signal that his defense has lowered. Continue using Ice Flowers (or if you are out, a Pocket Chomp or Cannon). You might not defeat him the first time. When he gets back in his adult form, continue damaging him, then use the hammers again and continue the process. Once Baby Bowser is defeated, just repeat the same process with adult Bowser.
Defeating Commander Shroob
When the battle begins, you will be facing three Shroobs holding a large Shroob-like Bomb-omb. Attack and destroy the middle and rear Shroobs so that the front Shroob is crushed by the bomb because he cannot hold up the weight himself. The bomb will roll backwards, blowing up Commander Shroob, allowing you to attack him. The most effective attacks on him are the Ice Flower (to lower his stats, and do critical damage), Copy Flower, and Red Shell, provided you have good timing. His attack is mostly slapping Shroobs towards you;.defend with your hammers. He has a lot of HP, and the battle will last awhile because after a few turns he will summon more Shroobs with the bomb again. Repeat the first strategy to reveal Commander Shroob again, then repeat the second strategy until he is defeated. High Pow and a lot of patience is recommended.
Defeating Mrs. Thwomp
She can be a bit difficult, but if you see the pattern, it will be easy. She will usually jump up on the top of the screen and spin. If she lands on the Mario's side, make Mario jump first, then Luigi, and vice versa. If she manages to jump in the middle, make them both jump at the same time to avoid damage. She will also spit out rocks at you. Try to break them, because you will be given items such as Ice Flowers, Fire Flowers, Coins and Mushrooms. Once you damage her enough times, she will break apart and have four mini versions of her. Pay attention to which eyebrow raises. That is the direction they will be going to. When they jump toward you, just hit them with the hammer. If they hit you enough times, you will get dizzy and may miss a couple turns. When it is your turn, get a Red Pepper and use Ice Flowers to hit them all. It might lower some defenses. Continue using Ice Flowers. It will then transform back to its bigger self and continue the same process. It may seem like the battle is endless, but continue the process and she will eventually be defeated.
When Ms.Thwomp is divided into four mini-Thwomps, take note of their teeth. You can see that all four are different. Attack the one that has the same teeth as the bigger one and the battle should end faster.
Defeating The Piranha Plant
Keep on jumping on it and use Red Peppers. Once it is grounded to the floor, try to avoid the quicksand by doing multiple jumps. Once he is stuck inside the ground, he will try turning off the lights to get a Boo to steal an item from you. Smack the Boo with a hammer to prevent this from happening. Use a Fire Flower or Ice Flower and keep hitting it. Using an item such as a Pocket Chomp will only hurt you. Repeat the process until it is defeated.
Defeating Princess Shroob
Use Copy Flower or Trampoline on the shield. Once it is broken, use Mix Flower or a Red Shell because they are most powerful. She will then attack you with orbs. You must time your jump correctly. She will then either pull out another shield and attack with lasers and see if the lasers are pointing up or down. If she does not pull out another shield, keep hammering her with attacks. Eventually she will get in her chair and make another shield. She will then attack by going up and getting four robotic legs. She will jump above one of your characters and shoot laser rings at one brother. Jump immediately when the ring reaches the brother's head or lower if you desired. The princess will get straight and try to sit on you. Counterattack with your hammer. Sometimes, she will stop her move directly above the brother, then continue her attack. Heal if needed and attack. Keep doing this and you will defeat Princess Shroob and find out why princess peach did not want you to collect the Cobalt Star Pieces.
Use the following trick to counter Princess Shroob's teleport attack. When she teleports to all kinds of places and throws a energy ball at you, jump over them when she teleports in front of one of the brothers. If she appears in-between the brothers, watch her hands. When she extends one hand for the energy ball barrage, if it is her right hand she is attacking Luigi, then Mario; and vice-versa if she uses her left hand. Sometimes, she will attack from a ledge up high. If she raises her left hand (facing you) she is throwing a ball at Mario and Luigi if it is the right hand.
Defeating Shroob Princess' Twin
Have the Ulti-Free badge (bought in Fawful's shop for 90 Beans) on Luigi and the Shroom Badge A on Mario. Also have lots Super, Ultra, Max Mushrooms; Drops;, and 1-Up Supers. Start by hitting her as hard as you can with repeated Mix/Copy Flowers every turn with Luigi. Just have Mario attack normally. When you take off half her HP (3000 HP), she will appear to die, but instead turn into a much more powerful form with four tentacles and a cluster of tentacles at her feet. When this happens, target her foot, or better yet all of her, with a Mix Flower. When the foot is destroyed, she gets shorter. This allows you to target her crown. Destroy or knock off her crown so that your attacks will work on her. Repeat this process until she is defeated and watch what comes next Be prepared; she has 6,000 HP.
Defeating Sunnycide
There are five eggs in front of Sunnycide. Ignore Sunnycide and go for the eggs. Attack an egg until it hatches. A Yoshi will come out and start pushing a boulder on a ledge high above. Hatch five eggs while avoiding Sunnycide's attacks, and the Yoshis will launch the boulder at Sunnycide and knock him down. He is now vulnerable. Attack him with everything you have while avoiding his attacks until he stands back up. Repeat this process until he has been defeated.
Attacks
Use the following key. RED for Mario; GREEN for Luigi; red for Baby Mario, and green for Baby Luigi.
RED Jump: [A]
GREEN Jump: [B]
red Jump: [X]
green Jump: [Y]
RED Jump (extra damage): [A] (just before enemy)
GREEN Jump (extra damage): [B] (just before enemy)
red Jump (extra damage): [X] (just before enemy)
green Jump (extra damage): [Y] (Just before enemy)
Mario Piggyback Jump: [X] (just before enemy), [A] (just before enemy)
Luigi Piggyback Jump: [Y] (just before enemy), [B] (just before enemy)
RED Green Shell Attack: [A] (to start attack), [B], [A], [B], [A], [B], etc.
GREEN Green Shell Attack: [B] (to start attack), [A], [B], [A], [B], etc.
red Green Shell Attack: [X] (to start attack), [Y], [X], [Y], [X], [Y], [X], etc.
green Green Shell Attack: [Y] (to start attack), [X], [Y], [X], [Y], [X], etc.
RED + red Green Shell Attack: A (To Start Attack), [X], [B], [A], [X], [B], etc.
GREEN + green Green Shell Attack: B (To Start Attack), [Y], [A], [B], [Y], [A], etc.
red Hammer: X
red Hammer (extra damage): [X] (when hammer shakes)
green Hammer: [Y]
green Hammer (extra damage): [Y] (when hammer shakes)
RED Piggyback Hammer: [A] (when hammer shakes), [X] (when hammer shakes)
GREEN Piggyback Hammer: [B] (when hammer shakes), [Y] (when hammer shakes)
RED Cannon Bros.: [A] (to start attack), ?, ?, ?, ? (where ? is [A], [B], [X], or [Y])
GREEN Cannon Bros.: [B] (to start attack), ?, ?, ?, ? (where ? is [A], [B], [X], or [Y])
Double damage jump in Piggyback mode
Jump on an enemy with a Bro. When you would press the big Bros. button for the action command, press the little Bro. or baby's button. The baby will jump off and the big Bro. will attack again, doing double damage.
Double damage hammer in Piggyback mode
Attack an enemy with a hammer. When it shakes, press the baby's button and the big Bro. will stand the baby up. Then, press the button again to do double damage.
Easier way to fire things
Use the following trick if it is difficult to predict who will have the big fireball when you use the Flower Bros. item. Press all the buttons at once, and both of them will fire at the enemy.
More effective Bros. Flowers or Ice Flowers
When using Bros. Flower or Ice Flower, it is a good idea to have the sound at a good level so you can hear when the fireball or iceball switches to the other character . Although pressing both Bros. at once is an easier way to ensure you are always throwing with the character with the big fireball or iceball, doing this shortens the time you have to attack. If you only attack with the person with the fireball or iceball as perfectly as you can. you will gain more time, allowing more damage and possibly use it up to the maximum time. All Bros. moves have a maximum time.
Holli Jolli Village: Santa Clause reference
When you first arrive in Holli Jolli Village go into the Mayor's house. Hit him out of the chimney and he will look like Santa Clause and say "Ho Ho!".
Peach's Castle: Prince Peasley poster
In Peach's Castle (Present), go into the item shop. Walk up to the counter, and behind the Toad that sells items is a poster of Prince Peasley from Mario And Luigi: Superstar Saga.
Yoob's Belly: Anger the dinosaur
While in Yoob's belly, use the Baby Drill ability to tunnel underground. On the top screen, Yoob will be angry and have steam blowing out his nostrils.
Yoob's Belly: Easy beans
While in Yoob's Belly, after the babies spring up from the first room, the second room will be filled with beans.
Gathering beans
After you learn Baby Mario and Luigi's ability to dig underground, each time you see an small circle with a "X" in it, throw Baby Mario and Baby Luigi by pressing [X] or [Y]. Next, press [R] then [B] and [B] again to go underground. Move underneath the circle with the "X" in it, then press [B] under it and you will receive a bean.
Go to Thwomp Volcano and play the slot machine. Select "Help" before you play every time, the game will be free.
Stock jackpot
To use the following trick you must have first completed the game once (because there are only two files). Use the second file to play, then delete the first file if desired. you need to. When you start in Bowser's castle, defeat all enemies, hit every "?", "M", and "L" block, and get a large stock of items (1-up Mushrooms, regular Mushrooms, and some Mushroom Blocks). Also, you must be a expert on dodging attacks in order to use less items in battle, also including a lot of coins. In the first level where you get the first Star Piece, do the same process like you did in Bowsers castle. However, when you get to the point where you get the Hammers, you must get started on collecting beans. Sooner or later you will have a large amount of Mushrooms, 1-Up Mushrooms, and Drops, as well as some good Bros. items. On the next area, repeat the process again. When you reach the part where you are in Yoob's belly, it is best to search in the pipes like other places. There is a 100 Coin and a small area where the Yoshis give you items. On the next area (which has the third Star Piece), you will see some places that cannot be reached until you learn the Baby Spin. Finally, keep searching every room and defeat every enemy you encounter. Also, hit every block, and dig all the beans you can find (which you can tell by the circle with the X on it). Try to find the best outfits and items and have enough beans to get the badge that gives you unlimited Bros. items for no reason (costs 90 Beans).
Hidden shape
Battle six Twacks or Wonder Twacks to see a Star Of David shape. The shape can also be seen if you look closely in the middle.
Ending loop
Now and then when you defeat Princess Shroob's twin's uglier self, do not save when you are in the castle. You will be repeatedly defeating the powered-up Bowser. Save the game before the great battle so that you are free to wander around the world, leveling up and finding good items.
Glitch: Slow babies
When going down a large amount of stairs, jump, and have the babies jump off at the peak of your jump. Do this while still moving. The game should slow down when the babies are coming down. If done correctly it should take awhile for them to come down. Note: This can only be done when climbing to the observatory in Princess Peach's Castle (past or present), or in the Past Castle when you are climbing up the staircases in the area shaped like Princess Shroob.
Glitch: Hammer through wall
Play the level where you must fight Super Hammer Bros 3.0. When you are by the tree where the area splits in two, go to the right side then press [R] and [Y]. If done correctly, your hammer will be moving through the wall as you walk. Note: This only happens in areas with fences on the bottom of the screen.