SM64 N64 Behaviour Change Codes

Koopa the Quick moves much faster (JS)

Activate this code before the title screen appears.

NTSC

812FD21A 4220

In Bob-omb Battlefield Koopa the Quick will run really fast.

Note: Koopa may get stuck especially if you interact with him while he's running. Also, you may find him before the top of the mountain claiming he's won even though the timer is still running.

Gates in Bob-omb Battlefield replaced with Chain-chomps (JS)

Activate this code before the title screen appears. In Bob-omb Battlefield (any star) you will find that instead of the 2 gates that are opened by the switch there are 2 Chain-chomps guarding the switch! Your mission is to press the switch to release the red coin star but the switch will only work if you are standing on it while holding something. Can you do it with a Bob-omb or perhaps the small box you can pick up?

PAL

8129E426 478C

8129E486 478C

802FCE0B 0066

8129E434 0000

8129E436 2825

8129E46C 8607

8129E49A 2825

812FCE08 F800

8129E4F6 8032

8129E4F8 3406

8129E4FA 0001

8129E508 AC86

8129E50A BC04

812906AE 94AC

812906B0 0000

812906B2 0000

812906B4 1300

NTSC

812C2782 478C

812C27FE 478C

80330C4B 0066

812C2770 0000

812C2772 2825

812C27EC 8587

812C280E 2825

81330C48 F800

812C28CA 8035

812C28CC 3406

812C28CE 0001

812C28D0 AC86

812C28D2 DFD4

812B12EA B1E0

812B12F0 0000

812B12F2 0000

812B12F4 1140

Heart follows Mario (JS)

Turn this code on before the title screen appears. Go to a course with a spinning heart (e.g., Bob-omb battlefield) and when you get near it, it will home in on Mario and recover his health.

PAL

812FDEF2 4148

812C4932 00B3

812C493A 00B3

812C4940 0000

812C4942 0000

NTSC

81331942 4148

812F3C9A 00B3

812F3CA2 00B3

812F3CAC 0000

812F3CAE 0000

Note that when you enter Bob-omb Battlefield the '1-up appears' sound is played; this is the same for any other levels that have the spinning heart. Also, the 1-up sound will continually play whenever the heart is near Mario. If you use a warp the heart will be gone. Because this code modifies the homing-in 1-up mushroom it will recover health instead of giving a life.

Red and blue flames kill Mario instantly (JS)

Turn this code on before the title screen appears. Mario will be killed by any type of red or blue flame.

NTSC

8126CE08 A720

Monty Moles throw Fly Guys! (JS)

Turn this code on before the title screen appears. Then go to either Hazy Maze Cave or Tall, Tall Mountain where you will find that instead of the dirt that the Monty Moles normally throw they will instead 'throw' Fly guys!

PAL

812D214E 46DC

812D215A 00DC

NTSC

813047FA 46DC

81304806 00DC

Swap certain basic object behaviours around (JS)

Approaching a tree causes Mario to spin around. If touch an Amp, Mario will be thrown far back and his cap will fall off. If Mario tries to ride a Koopa shell, he will keep getting set on fire! If you try to pick up a box you will get pushed away, but you can bounce on its top. When using certain types of warps, such as in the flowerbeds, Mario will act as if walking through a door before warping. As for Goombas, if you get close enough to them, Mario will just walk through as if the Goomba were a door. Lastly, if you try to talk to someone or read a sign then you'll get quite a shock!

For some extra fun when using this code: talk to a Toad; jump onto a Bob-omb (see how many times you can keep jumping!). Inside the castle on the first floor, touch the wall near the door that leads to the Bob-omb Battlefield painting room (then look on the other side to see why it shocks you).

PAL

812F9BD4 8024

812F9BD6 8CFC

812F9BA4 8024

812F9BA6 8E88

812F9BF4 8024

812F9BF6 8F48

812F9C0C 8024

812F9C0E 95F4

812F9B44 8024

812F9B46 87EC

812F9BC4 8024

812F9BC6 8A44

812F9C14 8024

812F9C16 9354

NTSC

8132DA04 8024

8132DA06 E7D4

8132D9D4 8024

8132D9D6 E9D0

8132DA24 8024

8132DA26 EAD8

8132DA3C 8024

8132DA3E F354

8132D974 8024

8132D976 E0C4

8132D9F4 8024

8132D9F6 E420

8132DA44 8024

8132DA46 EFF8

All Visible Objects Home in on Mario! (JS)

Turn this code on before the title screen appears. Press D-pad up to make all visible objects (that are near enough) home in on Mario and press D-pad down to stop them homing in. Because there can be so many objects at once, however, the game may crash and with some levels the game may crash as soon as you enter the level, including outside the castle; the code works best in Bob-omb Battlefield. Also, if you go near where there is a homing in 1-up the game will crash.

PAL

812C53B4 27BD

812C53B6 FFE8

812C53B8 AFBF

812C53BA 0014

812C53BC 0C0D

812C53BE E4E6

812C53C0 0000

812C53C2 0000

812C53C4 3C03

812C53C6 8033

812C53C8 2463

812C53CA ED90

812C53CC 8C67

812C53CE 0000

812C53D0 8CE3

812C53D2 0014

812C53D4 1060

812C53D6 0049

812C53D8 8FBF

812C53DA 0014

812C53DC 3C03

812C53DE 8033

812C53E0 2463

812C53E2 ED88

812C53E4 8C66

812C53E6 0000

812C53E8 10E6

812C53EA 0044

812C53EC 3C03

812C53EE 8031

812C53F0 2463

812C53F2 B010

812C53F4 8C66

812C53F6 0000

812C53F8 10C0

812C53FA 0040

812C53FC 0000

812C53FE 0000

812C5400 1000

812C5402 0014

812C5404 0000

812C5406 0000

812C4BB8 0000

812C4BBA 0000

813866A0 802C

813866A2 53B4

D0309260 0008

8030B013 0001

D0309260 0004

8030B013 0000

NTSC

812F496C 27BD

812F496E FFD8

812F4970 AFBF

812F4972 001C

812F4974 0C0E

812F4976 119E

812F4978 0000

812F497A 0000

812F497C 3C03

812F497E 8036

812F4980 2463

812F4982 1160

812F4984 8C67

812F4986 0000

812F4988 8CE3

812F498A 0014

812F498C 1060

812F498E 0058

812F4990 8FBF

812F4992 001C

812F4994 3C03

812F4996 8036

812F4998 2463

812F499A 1158

812F499C 8C66

812F499E 0000

812F49A0 10E6

812F49A2 0053

812F49A4 3C03

812F49A6 8034

812F49A8 2463

812F49AA D3E0

812F49AC 8C66

812F49AE 0000

812F49B0 10C0

812F49B2 004F

812F49B4 0000

812F49B6 0000

812F49B8 1000

812F49BA 001E

812F49BC 0000

812F49BE 0000

812F3FF8 0000

812F3FFA 0000

8138B9E0 802F

8138B9E2 496C

D033AFA0 0008

8033D3E3 0001

D033AFA0 0004

8033D3E3 0000

Thanks to YouTube user pricesspaigeI99I for the following codes:

Bob-Ombs Leave Lots of Flames That Turn Into Blue Coins

Turn this code on before the title screen appears. When the bob-ombs chase you flames will come out all around them and turn into blue coins, Be careful not to get burnt by the fire or if you don't want the fire to affect you change the 1A74 to 1A78, then the fire will not harm Mario!

NTSC

812E7556 0A98

812E7562 0000

812B8AE6 0830

812B8AF2 0077

812AC88E 1390

812AC89A 0000

812B0ABA 1A74

812B0AC6 0090

PAL

812BAA1A 0A98

812BA9FE 0000

81296516 0830

8129651E 0076

8128CACA 1390

8128CADE 0000

81290012 1A74

8129001A 00CB

Item Blocks Come Out Of Red Coins

Turn this code on before the title screen appears. When ever you collect some red coins or certain yellow coins item blocks will appear containing metal caps, vanish caps , koppa shells, course stars and coins. Do not use this code in The Secret Aquarium.

PAL

812B95EA 2250

812B95EE 0089

NTSC

812E5CAA 2250

812E5CAE 0089

Three Blue Slug Flames Appear On The Ground In Bob-Omb Battlefield

Turn this code on before the tittle screen appears. In Bob-omb Battlefield, groups of three blue slug flames will appear on the ground and a single blue flame slug will fall from the sky instead of a water bomb. Be careful, if there are too many flames the game may crash.

NTSC

8130617A 1170

8130617E 0000

8130625A 1A74

81306266 0000

812B8AC5 0001

812B0ABA 1A0C

812B8AE6 1390

812B0AC6 0000

812B8AF2 0000

812AF67E 1A30

81306274 0000

812AF68A 0091

81306276 0000

Bowser Breathes Flames That Turn Into Blue Slug Flames

Turn this code on before the title screen appears. The code is like the other code called Bowser's Flames Turn Into Blue Slug Flames but it's different whenever bowser breaths his fire his flames will come out all around him and turn into blue slug flames.

NTSC

812B405A 1390

812B4066 0000

812B0ABA 1A74

812B0AC6 0091

812B8AE6 1A0C

812B6AF2 0000

PAL

81292AF6 1390

81292B26 0000

81290012 1A74

8129001A 0091

81296516 1A0C

8129651E 0000

Three Blue Flames Fall From The Sky In Bob-Omb Battlefield

NTSC

8130617A 1398

812B0ABA 1A0C

812B0AC6 0000

8130625A 1AA4

81306266 00CB

81306274 0001

PAL

812D3672 1390

812D3676 0000

81290012 1A0C

8129001A 0000

812D36F2 1AA4

812D36F6 00CB

812D3740 0000

812D3742 0000

Turn the code on before the title screen appears:

Bad Lakitu Gives Wing Caps Instead Of Spinies

NTSC

81302D16 3DB8

81302D22 0087

Bad Lakitu Throws Chunkyas Instead Of Spinies

NTSC

81302D16 0528

81302D22 00DF

Bad Lakitu Throws Fireballs Instead Of Spinies

NTSC

81302D16 1170

81302D22 0000

Thanks to YouTube user pricesspaigeI99I for the following code:

Two Blue Flames Come Out Of Red Coins

Turn this code on before the title screen appears. When ever you collect some red coins or certain yellow coins two blue slug flames will appear and when they land they will turn into three blue slug flames that will try to chase Mario.

PAL

812B95EA 1984

812B95EE 0000

NTSC

812E5CAA 1984

812E5CAE 0000

Thanks to YouTube user pricesspaigeI99I for the following code:

Bob-Ombs Come Out Of Bob-Ombs

Turn this code on before the title screen appears.

PAL

812B91CE 3174

812B91D6 00BC

812BA22E 2284

NTSC

812E5786 3174

812E5792 00BC

812E6BA2 2284

Thanks to YouTube user pricesspaigeI99I for the following code:

Get Six Koopa Shells From Koopa Instead Of One

Turn this code on before the title screen appears. As well as getting multiple Koopa shells from Koopa, if a Koopa shell breaks you will get many more.

PAL

812CB65E 0A60

8128C946 1F3C

8128C95A 00BE

NTSC

812FC4D2 0A54

812AC68E 1F3C

812AC69A 00BE

Replace signposts with King Whomp (JS)

Go inside the castle, activate this code and then go to either Bob-omb battlefield, Whomp's fortress or Tiny-huge island. Please note that sometimes a King Whomp won't be abe to harm Mario due to the different surfaces, and do not go to any other course that has signposts even if you turn the code off (you'll need to restart).

PAL

812FDE3A 2BB8

812FDE3C 0067

NTSC

8133188A 2BB8

8133188C 0067

Replace signposts with Dorrie (JS)

Turn this code on inside the castle and then go to either Lethal lava land, Big Boo's haunt (via level select but game slows down and crashes in Big Boo's haunt) or Cavern of the metal cap (using level select) but not Hazy maze cave.

DO NOT GO TO ANY OTHER COURSES THAT HAVE SIGNPOSTS EVEN IF YOU TURN THE CODE OFF (YOU'LL HAVE TO RESET).

PAL

812FDE3A 4F90

812FDE3C 0068

NTSC

8133188A 4F90

8133188C 0068

Signposts replaced with Chuk-ya (JS)

Turn on this code and then go to any level that has signposts including outside the castle, Bob-omb battlefield and Jolly roger bay.

PAL

812FDE3A 0528

812FDE3C 00DF

NTSC

8133188A 0528

8133188C 00DF

Signposts replaced with Shuguys (JS)

With this code on make your way to a level that has signposts, like outside the castle or Whomp's fortress, for the signposts to have changed to shyguys.

PAL

812FDE3A 46DC

812FDE3C 00DC

NTSC

8133188A 46DC

8133188C 00DC

Goombas come out of Gombas (JS)

Before the title screen activate this code and then in any level that has Goombas, defeating them will result in another Goomba appearing instead of a coin, although sometimes you won't get another. This code also works for the big Goombas in Tiny-huge island if you stomp them but you'll get a normal size Goomba.

PAL

8037E0BB 00C0

8137E0C6 472C

NTSC

802A1BA7 00C0

812A1BAE 472C

Big and small Goombas and Piranha plants swapped (JS)

This code works for Tiny-huge island but doesn't affect all the Goombas and Piranha plants and does change the Piranha plants to large versions in the course Bowser in the sky. Activate the code and then go to any of the mentioned levels.

PAL

802FE5BF 0001

802FE5C7 0000

802FDE87 0002

802FDE8F 0001

NTSC

8033200F 0001

80332017 0000

803318D7 0002

803318DF 0001

Get many Goombas from each Goomba (JS)

This code combines the Goomba jackpot and Goomba come out of Goombas cheats and needs to be turned on before the title screen. In any course that has Goombas, you will get lots of Goombas from a single Goomba-it's best to punch rather than stomp them or you may get no Goombas.

Too many Goombas will slow down or even crash the game.

PAL

8037E0BB 00C0

8137E0C6 472C

802FEE77 0020

NTSC

802A1BA7 00C0

812A1BAE 472C

803328C7 0020

Get Piranha plant from Goombas (JS)

Turn on this code before the title screen and then make your way to a level such as Bob-omb Battlefield or Tiny-huge island (works also for big Goombas if you stomp them). Now a Piranha plant will pop out of a goomba instead of a yellow coin. Also, this code works for other objects that you would usually get yellow coins from including the wooden posts that you run around, but only one Piranha plant will appear.

It's possible that the piranha plant from the Goomba will appear in the air and stay there as it's not affected by gravity.

PAL

8037E0BB 0064

8137E0C6 1FBC

NTSC

802A1BA7 0064

812A1BAE 1FBC

Running Koopa comes out of Goombas (JS)

Turn this code on before the title screen and then when you stomp a Goomba a running Koopa (as if he'd lost his shell) will come out instead of a yellow coin. This works for Bob-omb battlefield and Tiny-huge island (small and big Goombas, if stomp them not ground-pound). Also, this code works for other objects that you would usually get yellow coins from including the wooden posts that you run around.

PAL

8037E0BB 0068

8137E0C6 4580

NTSC

802A1BA7 0068

812A1BAE 4580

Get no coin from Bob-ombs (JS)

With this code on before the title screen, you will ge no coins from any Bob-ombs.

PAL

812B91D8 0000

812B91DA 0000

NTSC

812E578C 0000

812E578E 0000

Get 1-up mushrooms from green trees instead of leaves (JS)

Turn this code on before the title screen and then if you climb a green tree outside the castle, in Bob-omb battlefield or other places you will get different size 1-up mushrooms.

PAL

81290012 4010

8129001A 00D4

NTSC

812B0ABA 4010

812B0AC6 00D4

Bob-ombs leave a trail of yellow coins (JS)

Turn on this code before the title screen and then in any level that has Bob-ombs they will leave a trail of yellow coins instead of emitting smoke.

PAL

812BA9FE 0074

812BAA1A 3068

NTSC

812E7562 0074

812E7556 3068

Killer 1-up mushrooms (JS)

Have this code on before the title screen so that whenever you get a 1-up mushroom, Mario will be killed.

PAL

812C4938 A040

812C493A 00AE

NTSC

812F3CA0 A1C0

812F3CA2 00AE

Get wing cap from Koopa instead of Koopa shell (JS)

Activate this code before the title screen appears and then in levels that have a Koopa such as Bob-omb battlefield and Tiny-huge island, stomping the Koopa will give you a wing cap not a Koopa shell.

PAL

812CB66A 0087

812CB65E 3DB8

NTSC

812FC4DE 0087

812FC4D2 3DB8

Replace signposts with Thwomps (JS)

Activate this code when inside the castle and then go to Whomp's fortress.

PAL

812FDE3A 0B8C

812FDE3C 0058

NTSC

8133188A 0B8C

8133188C 0058

Bob-ombs come out of metal cap boxes (JS)

Turn on this code and then go to a level that has a metal cap box, every time you break it open a Bob-omb will come out.

PAL

802FCD6B 00BC

812FCD6E 3174

NTSC

80330BAB 00BC

81330BAE 3174

Bob-ombs leave trail of metal caps (JS)

Activate this code before the title screen appears and then in any level that has Bob-ombs they will leave a trail of metal caps.

PAL

812BA9FE 0086

812BAA1A 3DD8

NTSC

812E7562 0086

812E7556 3DD8

Get Yoshi out of Wing cap box (JS)

When outside the castle activate this code and then use the cannon to get to the top of the castle. Every time you break open the wing cap box you will get another Yoshi who you can talk to, but you can't get more than 100 lives. Do not use this code in other courses.

PAL

802FCD63 0055

812FCD66 4538

NTSC

80330BA3 0055

81330BA6 4538

Chuk-yas come out of wing cap boxes (JS)

Activate this code and then go to a level that has a wing cap box.

PAL

812FCD62 00DF

812FCD66 0528

NTSC

81330BA2 00DF

81330BA6 0528

King Bob-omb appears instead of star from Koopa the Quick (JS)

Turn this code on before the title screen, go to Bob-omb Battlefield and select the star to race Koopa the Quick. Get to the mountain top before he does and talk to him-King Bob-omb will show up. If you defeat him, he will be replaced with another King Bob-omb!

Do not get a star from an object in any other course when using this code.

PAL

812C3B62 01F4

812C3B6A 0056

NTSC

812F2AC6 01F4

812F2AD2 0056

Poison 1-up mushrooms (JS)

Activate this code before the title screen to cause the 1-up mushrooms to take a life instead of giving one. As a side effect, collecting a 1-up at zero lives will give you 255, displayed as 'M1' (because the counter doesn't go over 100).

PAL

812C4936 FFFF

NTSC

812F3C9E FFFF

Change the 'FFFF' to any hex value to alter how many lives you get from a 1-up mushroom; if this value is '8000' or over live(s) wil be subtracted (e.g., 'FFFF'=-1 life).

The ghost of Peach-outside the castle (JS)

Select a file and outside the castle where you start turn on the code to meet the ghost of Peach where the first signpost usually is (warning: turn the code off if you want to enter the castle).

PAL

8030FCCD 0019

8130FCCE 3A90

8130FCF4 8013

8130FCF6 8760

8130FE86 2F9C

8130FE8E 2F9C

8130FD46 2049

NTSC

8034209D 0019

8134209E 4690

813420C4 8013

813420C6 9360

81342256 D8DC

8134225E D8DC

81342116 2049

Peach-Goomba outside the castle (JS)

When outside the castle use this code and go to the right of the castle where you will find Peach instead of the signpost but she will harm you if you get too close, but you can bounce off the top of her like a Goomba.

PAL

8030F80D 0019

8130F80E 3A90

8130F834 8013

8130F836 8760

8030F977 00FF

8030F929 0040

8030F97B 0001

NTSC

80341BDD 0019

81341BDE 4690

81341C04 8013

81341C06 9360

80341D47 00FF

80341CF9 0040

80341D4B 0001

HINT: Change the last value 0001 to a higher value (up to 0008) so that Peach does more damage to Mario.

Climb the Cannon balls in Bob-omb Battlefield Star 3 (JS)

You know the three cannon balls in Bob-omb Battlefield on the way to the mountain summit-now you can climb them like a tree and they won't do you any damage! This code works best for the third star but can be used for the other Bob-omb Battlefield stars though not all of the cannon balls will be affected.

PAL

8031C7CB 0040

8031CA2B 0040

8031CC8B 0040

NTSC

8034EB9B 0040

8034EDFB 0040

8034F05B 0040

Purple switch activated blocks reactivate (JS)

Turn this code on before the title screen appears. Blocks activated using the purple switch reappear after their flashing phase. Tested in Wet-Dry world.

NTSC

812B1464 0000

812B1466 0000

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