Mario & Luigi: Bowser's Inside Story + Bowser Jr.'s Journey

Mario & Luigi: Bowser's Inside Story + Bowser Jr.'s Journey (known as Mario & Luigi RPG3 DX in Japan) is a game for the Nintendo 3DS that was released in Japan on December 27, 2018 and in America on January 11, 2019, and set to be released in Europe on January 25, 2019 and in Australia on January 26, 2019. It was announced in a Nintendo Direct on March 8, 2018. The game is an enhanced remake of the 2009 Nintendo DS game Mario & Luigi: Bowser's Inside Story. The remake also features another story where Bowser Jr. takes action on an adventure, similar to Minion Quest: The Search for Bowser, with two important differences shown so far: a slot for an additional First Officer who will have its own actions just like Bowser Jr. as well as formations for the troops. The game is the second enhanced remake of the Mario & Luigi series, the fourth game in the series to be released for the Nintendo 3DS, and the seventh game in the series overall.

The game is now amiibo compatible: scanning one will grant the player an item. According to the manual, the same amiibo can only be scanned once per day.

Gameplay changes

 * Like the other 3DS Mario & Luigi games, the hammer can be held for an infinite amount of time, making defensive hammer guards easier.
 * Fleeing will not cause the player to lose coins.
 * The number of hits of the Green Shell Special Attacks for the Bros. has been reduced from ten hits to six hits, and the finishing attack is similar to the 3D Red Shell and 3D Green Shell from Mario & Luigi: Dream Team and the 3D Red Shell from Mario & Luigi: Paper Jam.
 * Like in Mario & Luigi: Superstar Saga + Bowser's Minions, using a Hammer on an enemy before battle will give them a Speed Down effect.
 * Yoo Who Cannons now aim at the enemy while the attack is in use.
 * The Battle Guide now takes the form of a Command Block called the "Guide Block" for both the Bros. and Bowser during battles.
 * Super Bowser has a new attack during giant battles, "Spinning Slide", which involves drawing a circle with the stylus.
 * Super Bowser's Fire Breath attack is now done by tapping the touch screen instead of blowing into the mic.
 * The button can now be used to fast-forward cutscenes.
 * Special Attacks were renamed Bros. Attacks, and they now cost different amounts of SP.
 * The Green Shell Bros. Attack now costs 4 BP instead of 3 SP.
 * The Fire Flower Bros. Attack now costs 6 BP instead of 4 SP.
 * The Jump Helmet Bros. Attack now costs 10 BP instead of 6 SP.
 * The Yoo Who Cannon Bros. Attack now costs 14 BP instead of 7 SP.
 * The Super Bouncer Bros. Attack now costs 12 BP instead of 7 SP.
 * The Spin Pipe Bros. Attack now costs 16 BP instead of 10 SP.
 * The Mighty Meteor Bros. Attack now costs 20 BP instead of 8 SP.
 * The Snack Basket Bros. Attack now costs 18 BP instead of 14 SP.
 * The Magic Window Bros. Attack now costs 26 BP instead of SP.
 * The Falling Star Bros. Attack now costs 28 BP instead of 20 SP.
 * Bowser's Command Block for Special Attacks has been renamed to Brawl Attacks and now cost different amounts of BP:
 * Koopa Corps now costs 14 BP instead of 10 SP.
 * Bob-omb Blitz now costs 18 BP instead of 12 SP.
 * Magikoopa Mob now costs 17 BP instead of 15 SP.
 * Goomba Storm, Shy Guy Squad and Broggy Bonker retain the same amount of BP they used in the original game.
 * Spin Pipe has been shortened so that the player must tap the appropriate button in a rhythmic fashion, followed by a single long rotation.
 * Number of hits of the Mighty Meteor Bros. Attack for the Bros. has been reduced from five hits to four hits.
 * Magic Window has been nerfed and no longer uses infinite inputs; the attack now ends with three windows on both sides opening one by one, with both bros jumping out of them to stomp on the enemy.
 * The "Easy" mode for Bros. Attacks returns from Mario & Luigi: Superstar Saga + Bowser's Minions.
 * Mario, Luigi and Bowser now start with three Gear slots by default.
 * Like in Mario & Luigi: Dream Team, the player can hold more than one badge at a time.
 * There are now 2 extra Badges for Mario to use.
 * The Badge Command Block to change badges is absent from the remake; instead, they are changed at the bottom right corner on the touch screen.
 * Boot and Hammer Gear return from Mario & Luigi: Dream Team and Mario & Luigi: Paper Jam.
 * Rank-Up Bonuses return from Mario & Luigi: Dream Team and Mario & Luigi: Paper Jam.
 * The Boomerang Rank from Mario & Luigi: Paper Jam returns for Mario and Luigi. Said rank replaces the Shine Rank and switches places with the Flower Rank.
 * Bowser's "Final Boss" rank is retooled as his fifth rank, while receiving a new fourth rank: Platinum Boss.
 * Scratch Cards are now played by choosing a square with the and buttons.
 * Bowser now eats Cheese instead of Syrup Jars to restore BP.
 * Likewise, Bowser now eats Cheesy Drumsticks instead of Star Candies to fully restore his HP and BP.
 * Bowser can now attack enemies to make them drop Blitties so he can inhale them.
 * Experience Points are no longer received from Giant Battles; instead, items and gear are rewarded like in Mario & Luigi: Dream Team and Mario & Luigi: Paper Jam.
 * Giant Battles can now be re-fought in The Gauntlet.
 * Defense Bean, Speed Bean and Flex Bean can now be used to boost stats.
 * Some Bean locations have been changed or altered.
 * Kuzzle now gives 5 beans instead of 10 after completing all puzzles. He also gives the player a Barrier Wear.
 * The player can now help Luigi escape Junker and Junker X's suction that puts him in a Junker Can and Junker Can X respectively by mashing the button.
 * When defending against Super Bowser X's Fire Breath attack, the player must hammer the fireballs away instead of jumping over them.
 * When Bowser (second fight) and Bowser X gets angry, he will fully heal himself with a Drumstick.
 * Retry Clocks no longer appear like it did in the original version, as the player can retry a battle at any time (or in Easy Mode) if the player gets a Game Over like in the other 3DS Mario & Luigi games.
 * Enemy stats were changed.

Visual changes

 * Enemy levels are now visible.
 * The screen shakes whenever Bowser moves in the overworld.
 * Some practices from the original game do not reappear. This is likely due to the Battle Guide.
 * The camera briefly zooms in and then out if the player successfully gets an "Excellent!" on Bowser's punch.
 * Some quotes have been added or altered.
 * Bowser can now find coins in some trees using his Fire Breath.
 * After the player hits and saves on a Save Block (or loads up the game from the last save point) and if the bros.' stats are low, a message will appear that reads: "Don't forget to restore your HP & BP."
 * The area with the Sea Pipe Statue now has a Blooper-shaped stone on the ground.
 * After finishing the Goomba Storm Brawl Attack for Bowser, he will raise his left hand to look up at the Goombas as they fall.
 * When the water fills in Pump Works, the Bros. will slightly float and sink back down.
 * After finishing the Fire Flower Special Attack, Mario will clean his hands, spin around and tip his hat, while Luigi spins around and does a finger gun motion.
 * The sprouts on the Leaf Guys's heads now flutter instead of spinning around like a propeller.
 * When Bowser gets crushed by a giant enemy, the background of his eyes will close, the blue map of Bowser's body on the bottom screen will also turn red.
 * The Green Orb in the Rump Command is a diamond shape rather than a round shape.
 * Bowser and Midbus no longer fight in a cage in Bowser's Castle before the boss fight begins.
 * Chain Chawful now takes damage from Bowser's shell.
 * The Fire Flower Special Attack no longer damages Calorites, but heals them instead.
 * The pole that blows air out to turn Mario into Balloon Mario in the Pipe Yard to Peach's Castle is replaced by a platform.
 * Luigi now balances on the Super Bouncer ball when performing the Special Attack. He also bounces off of the enemy before kicking the ball down at them when the attack is performed successfully.
 * Yikk now floats in the air instead of being on the floor.
 * Bowser can no longer punch the Boo-ray Machine; instead, he must stand on the pad to activate the spotlight.
 * Freeing a minion from Jailgoon will now give Bowser a drumstick instead of a mushroom.
 * Bowser Memory Neuron and Starlow will remain in the Memory Banks room instead of a blue background during a puzzle sequence.
 * In the boss battle against Bowser Memory ML, the Koopa Troopa Memory who would show up to bring Bowser Memory M back to normal size is absent, and Bowser Memory M shrinks by himself.
 * The mushroom that enlarges Bowser Memory M is now a Mega Mushroom.
 * The meteor in the Mighty Meteor Special Attack is now a 3D meteor that lacks the "?" icon. The meteor is similar to the Trio Attack Trio Meteor in Mario & Luigi: Paper Jam. It also explodes into confetti unlike in the original.
 * In Madame Broque's Goomba Storm minigame, if enough Goombas have been burned, some will clump together into a ball before dropping onto Madame Broque's back.
 * Bowser now has a whistle during the Bob-omb Blitz Brawl Attack.
 * The concrete floor and grass outside of Peach's Castle are different and the area has a Fawful face on the ground.
 * Bowser shoots fireballs out of his mouth at the Magikoopas during the Magikoopa Mob Brawl Attack.
 * The Vacuum Block is yellow, rather than green.
 * After the Bros. defeat the Dark Star, it transforms into Dark Bowser and then leaves Bowser's body.
 * Bowser will now toss soap on Broggy when he uses Broggy Bonker Brawl Attack.
 * Kretin X now has a color scheme similar to its normal counterpart, albeit much darker.
 * The Dark Star X and the Dark Satellmites X have been recolored yellow with purple eyes, rather than being red with blue eyes in the original version.
 * The Toads in Toad Town are now regular Toads with differently colored spots and vests rather than differing in height and clothing.
 * At the beginning of the Dark Star Core part of the final battle, Fawful briefly points at the bros before changing in size.

Audio changes

 * The boss battle music now plays during Mario's tutorial battle against Bowser instead of the standard battle music.
 * Bowser's footstep sounds have been changed.
 * Fawful's voice sounds are slightly lowered; however, his speech text sounds remain normal.
 * The Cavi Cape music starts playing when the Bros. enter the Funny Bone instead of the Bowser Path music.
 * There is a sound that plays whenever the player selects a Brawl Attack for Bowser.
 * Fawful's main music plays when Bowser enters the room with food instead of his Castle music.
 * After Luigi enlarges during the Snack Basket Bros. Attack, he will make a low-pitched laugh. When he lands on Mario after this happens, Mario will make an angry sound, and will grunt each time he pushes Luigi up.
 * The Dark Star and Dark Fawful now have their own battle themes; for Dark Fawful, his theme is a slowed down cover of Cackletta's battle theme from Mario & Luigi: Superstar Saga.
 * Fawful's Plan music now plays during Super Peach's Castle's transformation instead of Final Castle music.
 * When the Dark Star Core changes into its true form inside Bowser during the final battle, Fawful does not laugh, rather he laughs before it transforms.
 * The music for the final battle now continues to play after the Dark Star Core is defeated.

Captain

 * Bowser Jr.
 * Bowser Jr and Junior Clown Car
 * Bowser Jr. masked with his bandanna

First Officer

 * Ludwig von Koopa
 * Morton Koopa Jr.
 * Iggy Koopa
 * Wendy O. Koopa
 * Kamek
 * Lemmy Koopa
 * Larry Koopa
 * Roy Koopa

Troops

 * Goombas
 * Paragoombas
 * Goomba Tower
 * Big Tail Goomba
 * Captain Goomba
 * Private Goomp
 * Koopa Troopas (Green)
 * Koopa Troopas (Red)
 * Captain Koopa Troopa
 * Koopa Paratroopas (Green)
 * Koopa Paratroopas (Red)
 * Blue Paratroopas
 * Corporal Paraplonk
 * Buzzy Beetles
 * Spike Tops
 * Para-Beetles
 * Spinies
 * Mechakoopas
 * Broozers
 * Pokeys
 * Chain Chomps
 * Chargin' Chucks
 * Horned Ant Troopers
 * Bob-ombs
 * Bullies
 * Dry Bones
 * Parabones
 * Lakitus
 * Boos
 * Bomb Boos
 * Tail Boos
 * Big Boos
 * Captain Boo
 * Para-Biddybuds (Red)
 * Para-Biddybuds (Green)
 * Para-Biddybuds (Yellow)
 * Para-Biddybuds (Blue)
 * Swoops
 * Shy Guys (Red)
 * Shy Guys (Light Blue)
 * Shy Guys (Yellow)
 * Shy Guys (Pink)
 * Fly Guys
 * Spear Guys
 * Captain Shy Guy
 * Sergeant Guy
 * Ninjis
 * Hammer Bros
 * Ice Bros
 * Fire Bros
 * Boomerang Bro
 * Fire Stalking Piranha Plants
 * Spikes
 * Bandits
 * Magikoopas (White)
 * Magikoopas (Red)
 * Magikoopas (Green)
 * Bowser
 * Nabbit

Bosses

 * King Bob-omb
 * Broque Madame
 * Captain Goomba
 * Captain Boo
 * Captain Koopa
 * Oho Jee
 * Shroobs
 * Koopalings
 * Elite Trio
 * Bowser
 * Nabbit
 * Best Fitness Friends
 * Kaley
 * Dieter
 * Beef

Troops

 * Chuboomba
 * Toothy
 * Drillbit Crab
 * Scutlet
 * Sockop
 * Fawflant
 * Crawful
 * Pendril
 * Fawful Guy
 * Choomba
 * Alarm Bob-omb
 * Fawfulcopter
 * Lakitu King
 * Cheep Cheep
 * Urchin
 * Shroobs
 * Borp
 * Treevil
 * Beehoss
 * Magifoofa
 * Oho Jee (red)
 * Oho Jee (blue)

Nintendo eShop description
''Laugh your way through a hilarious story told from three perspectives! Search the Mushroom Kingdom for a cure as Bowser, explore his innards as the Mario Bros., and discover the untold story of Bowser Jr's Journey. Overcome the fury of Fawful, action-packed battles, puzzling tasks, and giant bosses in a classic action RPG-stuffed with new content! Mario and Luigi are stuck inside Bowser, forced to accomplish unusual tasks to assist their arch nemesis with hero stuff across the land. The scenes and dialogue that ensue will have you cackling like Fawful, even in battle! Time your button presses and keep up with the action: turn the system sideways, blow into the mic, or tap the touch screen. In an all-new mode, Bowser Jr. will cross paths with our unlikely allies as he recruits Ranged, Flying, and Melee troopers to fight for his cause. Strategically form teams and pit them against enemies to reign supreme in frenetic combat.''

Trivia

 * This is the only 3DS Mario & Luigi game to have battles primarily take place on the touch screen.