needashell - Reserve box holds a green shell
needaredshell - Reserve box holds a red shell
needablueshell - Reserve box holds a blue shell
needayellowshell - Reserve box holds a yellow shell
needaturnip - Reserve box holds a turnip. Who needs this?
needa1up - Reserve box holds a 1-UP. Better use moneytree.
needamushroom - Reserve box holds a Super Mushroom.
needaflower - Reserve box holds a Fire Flower.
needaleaf - Reserve box holds a Super Leaf.
needanegg - Reserve box holds an egg with no contents.
needaplant - Reserve box holds Toothy, a plant that can smash through bricks and defeat enemies.
needagun - Reserve box holds the Billy Gun.
needaswitch - Reserve box holds a P-Switch.
needabomb - Reserve box holds a SMB2 Bomb.
needashoe - Reserve box holds a Kuribo's Shoe
itsamemario - Changes Player into Mario.
itsameluigi - Changes Player into Luigi.
supermario128 - Clones Player 128 times.
supermario64 - Clones Player 64 times.
supermario32 - Clones Player 32 times.
supermario16 - Clones Player 16 times. SNES go!
supermario8 - Clones Player 8 times.
supermario4 - Clones Player 4 times.
supermario2 - Mario and Luigi appear. Push Down And The Drop Item Button To Switch From Mario To Luigi.
1player - Enables 1-Player Mode.
2player - Enables 2-Player Mode.
bombsaway - Spawns a bomb in Reserve Box.
firemissiles - Spawns a Bullet Bill.
greenegg - Spawns an egg with a Green Yoshi.
blueegg - Spawns an egg with a Blue Yoshi.
yellowegg - Spawns an egg with a Yellow Yoshi.
redegg - Spawns an egg with a Red Yoshi.
blackegg - Spawns an egg with a Black Yoshi.
purpleegg - Spawns an egg with a Purple Yoshi
pinkegg - Spawns an egg with a Pink Yoshi
stickyfingers - With this, you can grab and hold any NPC.
donthurtme - This enables invincibility, although you can still fall off of edges.
framerate - Works like Framerate code. Shows the current Framerate.
speeddemon - The game's Frames go as fast as possible, so the entire level's events happen faster.
shadowstar - Makes the Player Pitch-Black. Allows the Player to walk through walls.
hammerinmypants - Spawns a Friendly Hammer Brother in your hands.
wariotime - Turns NPCs into Coins.
stophittingme - Hits you.
boingyboing - Gives you a Trampoline.
ahippinandahoppin - Allows infinite jumping.
wingman - If you have leaf, you have P-Wing. (Infinite Flight.)
captainn - With pause key you can stop time like a clock. (Does not work if pause key is Esc.)
moneytree - Gives you infinite coins. LIFES!
flamethrower - If you have a Flower or Hammer Suit, it allows you to do Autofire when holding the run button.
sonicstooslow - This enables faster running.
Imtiredofallthiswalking - Opens all paths on World Map.
anothercastle - Changes you to Toad.
illparkwhereiwant - Lets you walk around the world map freely.
donttypethis - A rain of bombs pour down and explode.
wetwater - Turns the Whole Level into an Underwater one and changes the Music.
iamerror - Changes the Player into Link.
(Censored) - Lets you save after Cheating.
(Censored) Opens all locked Doors automatically.
needaniceflower - An Ice Flower spawns in the Reserve Box.
iceage - Freezes all Enemies on Screen as long as they aren't immune to Ice.
upandout - Gives you a Propeller Block.
burnthehousedown - Spawns a Heli Flamethrower in your hands.
Chat with our AI personalities
There are no cheat codes.
Cheat codes
Not without using cheat codes.
There is no built-in way to add cheat codes for New Super Mario Bros, but you can buy an Action Replay DS Hacking Device for $20 and add cheat codes for almost any DS game. I added a link to the Action Replay website as well as some codes you can use for it once you get it.
There are no cheat codes for brawl.