[[caption-width-right:350:Out of the way! Giant Plumber coming through!]]

->''New Power-Ups. New Moves. New Bosses.\\
Welcome to the new Mushroom Kingdom.''
-->-- '''[[http://mario.nintendo.com/ Official website]] for the DS game'''

''New Super Mario Bros.'' is a {{platform game}} released in 2006 for the UsefulNotes/NintendoDS and the first game in the ''VideoGame/NewSuperMarioBros'' series, [[RevisitingTheRoots deliberately modeled]] after the side-scrolling games in Creator/{{Nintendo}}'s ''Franchise/SuperMarioBros'' series, but featuring [[SpritePolygonMix polygonal renderings of some characters and objects to give it a 2.5D look]]. It's also the first original side-scroller in the series since 1995's ''VideoGame/SuperMarioWorld2YoshisIsland''.

The plot is rather simple. Bowser Jr. kidnaps Princess Peach, and Mario gives chase through eight worlds, each with at least one fortress and one castle. Each fortress ends with a battle with Bowser Jr., who retreats to either another fortress or a castle when defeated; meanwhile, the castles end with a unique boss fight. Before Mario can rescue Peach, Bowser Jr. nabs her and runs off to the next world, [[YourPrincessIsInAnotherCastle which is gonna happen a few more times]].

In addition to the series' usual {{power up}}s of the Super Mushroom, Fire Flower, and Starman, ''NSMB'' introduced some new ones. The Mega Mushroom turns Mario into a giant à la ''VideoGame/SuperMario64 DS'', allowing for some massive property damage. The Mini Mushroom shrinks Mario to the size of a mouse, enabling him to get through very small passageways and run on water at the expense of [[OneHitPointWonder death in one hit]]. The Blue Koopa Shell allows Mario to protect himself while crouching; when running, he can knock enemies away just like the Koopa shells he kicks. Finally, Shell Mario can swim better underwater.
!! This game provides examples of:
* AttackOfThe50FootWhatever: Mario can grow bigger than a freaking ''castle'' using the Mega Mushroom.
* AvengingTheVillain: Bowser Jr.
* BackFromTheDead: [[spoiler:Bowser in World 8.]]
* BattleDiscretionShot: In the opening cutscene, Mario takes a short beating from Bowser Jr. offscreen.
* BigBoosHaunt: The Ghost Houses.
* BreakingTheFourthWall: Closing the DS without turning the game off will result in Mario saying "Ba-bye." Opening it back up will cause Mario to greet you with "It's-a me!"
* BubblyClouds: World 7, which houses several sky-themed levels where the only safe platforms are the clouds and the top of the green and red mushroom trees. Some of the other worlds also have specific levels set in the sky.
%%* BuildLikeAnEgyptian
* TheChase: Pursuing Bowser Jr.
* CreditsMontage: The top screen shows all the levels you've cleared (even the cannons that you used). In the cases of the towers and castles, it will show the level itself first before the boss, while the final castle shows the level, the boss, and the princess being rescued.
* DamselInDistress: Peach gets kidnapped. Who saw that coming?
* DeaderThanDead: [[spoiler:Technically already-dead Dry Bowser is nonetheless beaten a second time. Given his JokerImmunity, though, he '''''still''''' manages to come back as Bowser during the FinalBattle.]]
* DeathMountain: World 6, in which Mario has to venture through gray-colored spiral mountains. Some of the levels bring back elements from other worlds (namely desert, lake, jungle and ice), making it also an example of HailfirePeaks. The spiral mountains return in World 8.
* DemBones: Dry Bones and [[spoiler:Dry Bowser]].
* DualBoss: The final boss is Bowser Jr. and [[spoiler:an enlarged Bowser]].
* EarlyInstallmentWeirdness:
** This is the only game in the ''[[VideoGame/NewSuperMarioBros New]]'' subseries to not have the Koopalings as the main bosses, but unique opponents like Giant Goomba and Petey Piranha. Bowser also appears as early as the end of World 1. In the other games, he doesn't appear until the final boss battle, and in this game he doesn't have a second phase where he turns into a giant. [[OverlordJr Bowser Jr.]] appears as every tower boss, and also lacks his Koopa ClownCar.
** Bowser has a computerized voice like in ''VideoGame/SuperMario64'' rather than being voiced by an actual voice actor, and the "power-up loss" and "coin" sounds are reused from ''VideoGame/SuperMarioBros1'' rather than ''VideoGame/SuperMarioWorld''.
** The first game also uses a different soundtrack from the one that debuted in the Wii game and was reused to varying degrees in the 3DS and Wii U entries. Despite the Koopalings’ absence in the first game, a remix of their boss fight from ''[[VideoGame/SuperMarioBros3 SMB3]]'' is used for the end bosses, whereas the Wii and Wii U games use another remix of the ''[=SMB3=]'' fight for the mid-bosses instead. The 3DS game, meanwhile, features a remix of the Koopaling fight from ''Super Mario World'' for its mid-bosses.
** The game lacks a post-finale Special World, instead opting for bonus lettered levels within the existing worlds that can be unlocked pre-finale (although ''[[VideoGame/NewSuperMarioBros2 NSMB2]]'' has both the lettered levels and bonus worlds).
** Unlike the later three games, there is no multiplayer for the main campaign. Instead, the only multiplayer is for the 'Mario vs. Luigi' mode, which uses exclusive courses. There are also minigames instead of alternate game modes.
** There is no quicksave feature, so you'll have to replay a tower/castle level or take advantage of Sleep Mode if you want to save before you beat the game.
* FamilyUnfriendlyDeath: The [[http://bowserdeath.ytmnd.com/ apparent demise of Bowser in World 1]] might be a little unnerving for some. [[spoiler:He doesn't stay dead, however, as he shows up in [[DemBones skeletal form]] in World 8, and Bowser Jr. revives him properly for the final battle.]]
* GimmickLevel: Bowser's Castle is filled with switches that turn the room upside down.
* GreenHillZone: World 1, as per the series' norm, is a lush, grassy area.
* GrimyWater: The forest levels contain purple water, which is an instant death on contact.
* GroundPound: This is the first 2D ''Mario'' game since ''VideoGame/YoshisIsland'' to implement this move. Note that Mario and Luigi can only crush blocks when they're at least on Super level. When they're small, the pound is too weak to do so.
* HalloweenTown: The first half of World 8, which consist of a decrepit valley overrun by Crowbers and Scuttle Bugs.
* HoistByHisOwnPetard: Can happen to Mario in certain levels if the Mega Mushroom is not used with care. One level is made up of nothing but pipes and the majority of them can be broken with the Mega Mushroom. Break too many of them and you'll fall into the BottomlessPit you've created.
* {{Homage}}: Several, to ''VideoGame/SuperMarioBros1''. For instance, many sound effects from the original game are intact, such as coin collecting, enemy squishing, and block bumping. In addition, the Mega Mushroom PowerUp is colored just like the Super Mushroom from the first game. Also, one of World 7's levels from NSMB is extremely similar to 7-1 from Super Mario Bros. 3.
* InfiniteOneUps: In homage to the original ''VideoGame/SuperMarioBros'', the "Koopa Shell Bounce" trick was shamelessly recreated.
* ItsAllUpstairsFromHere: The point of the tower levels.
* JungleJapes: World 4. The water is highly toxic, requiring Mario to ride Dorrie to avoid touching it, and the levels are overrun by Scuttle Bugs, Wigglers and Paratroopas. This setting makes its first appearance in a platform ''Mario'' game since ''[[VideoGame/YoshisIsland Super Mario World 2]]''.
* KnightOfCerebus: Bowser. [[spoiler:He falls into lava and his skin is burned off after his first fight with Mario, is in his skeletal form Dry Bowser in the second fight, and is revived but grown larger for the final battle]].
* LavaPit
* LethalLavaLand: The second half of World 8, only accessible after defeating Dry Bowser in what appeared to be the final level. One level has lava gradually rising, while another has spiral mountains erupting and launching melting rocks into Mario's whereabouts.
* MiniDungeon: As usual for 2D ''Mario'' games, the mid-world Tower levels, as well as the Ghost Houses.
* {{Mordor}}: World 8, which hosts a bleak and decrepìt scenery with haunted valleys, dark underwater levels, volcanoes and the final castle.
* MythologyGag:
** The game starts with a homage to World 1-1 from the first ''VideoGame/SuperMarioBros'', and there is a Bowser battle that can be defeated simply by breaking the bridge and dropping Bowser in the lava (or down a pit ala ''VideoGame/SuperMarioBros3''), replacing the axe with a button.
** Petey Piranha is sleeping before his boss fight and attacks when woken up. His very first appearance was ''VideoGame/SuperMarioSunshine'', and the second fight with him was triggered by waking him up. Both instances of Petey sleeping may in turn be throwbacks to ''VideoGame/SuperMario64'', where ''all'' the piranha plants were sleeping and had to be snuck up on.
** Then there's challenge mode, which is available after you beat the game, and enables RatchetScrolling like the original game.
* NeutralFemale: Princess Peach
* TheNewAdventures
* NoEnding: Unlike the other ''VideoGame/NewSuperMarioBros'' games, Mario and Peach are never shown actually leaving Bowser's castle.
* PaintingTheMedium: Underground shortcuts are represented by [[InterfaceScrew moving the top screen to the bottom, and vice versa.]] This also prevents you from using stored items.
* PalmtreePanic: World 3, which is set in a tropical island. Enemies like Cheep Cheeps and Skeeters are plentiful, and there's a Mega Cheep Cheep capable of eating Mario, killing him.
* PapaWolf: [[spoiler:Should you defeat his son first in the final battle, Bowser will [[TurnsRed Turn Red]] and barrage the boss lair with a spiral of fireballs.]]
* PumpkinPerson: Splunkins are basically waddling pumpkins that take 2 stomps to defeat.
%%* {{Reconstruction}}: Of the original 2D ''Mario'' sidescrollers.
* RecurringBoss: Bowser Jr. is the boss of every [[MiniDungeon tower]] in the game, and is also [[DualBoss one of]] the {{Final Boss}}es.
* SaveThePrincess: That's pretty much the whole plot, folks.
* ShiftingSandLand: World 2 is a desert, and as such there are quicksands, Pokeys and an oasis.
* ShoutOut: Bowser's defeat is very similar to [[VideoGame/{{Metroid}} Crocomire's]].
* SlippySlideyIceWorld: World 5, a snowy grove. There are parts in which the snow is so dense that it makes traction more difficult, as well as parts where the ice has to be taken advantage of to slide through narrow corridors.
* SnowySleighBells: [[SlippySlideyIceWorld The icy World 5]]'s [[https://www.youtube.com/watch?v=mJjObChGttY theme]] makes very heavy use of sleigh bells to instill a wintery feel to the track.
* SpaceFillingPath: That block train in the second World 8 tower goes an extremely long way around the room in a ping pong path fashion...
* SpringySpores: A lot of levels, beginning with 1-5.
* SuperNotDrowningSkills: Present, despite being absent in the 3D Marios that separated NSMB and its 2D predecessors and the one that separated the Wii version and the DS one.
* SuspendSave: You can only save at castles or by using star coins, though you have the ability to save anywhere on the map after you finish the final boss.
* TheReveal: The boss of World 7, Lakithunder was the storm cloud that attacked Peach's castle.
* ATwinkleInTheSky: Using a cannon on the map.
* UnderTheSea: The first underwater level is World 1-A but World 3 has most of them.
* TheVeryDefinitelyFinalDungeon: The giant-sized Bowser castle at the end of World 8.
* WalkOnWater: Mini Mario is light enough to do this.