The title explains everything

This code gives each player points based on how much time they took to get to the finish line after the leader. The time multiplier and max points can be modified by changing the values in the code. The code works both offline and online (all players must be running it for it to work).

NTSC-U
C252A0F0 00000011
48000034 7C67182E
81030040 A0680008
89280006 1D2903E8
7C691A14 A1280004
39000000 6108EA60
7D2941D6 7C691A14
4E800020 3CE0809C
80E78F70 80670018
88630000 5463103A
80E7000C 4BFFFFB9
7C6C1B78 7E639B78
4BFFFFAD 7C6A1B78
2C0A0000 4182001C
7D4C5050 3920XXXX
7D4A4BD6 392000YY
7C6A4851 41A10008
38600000 00000000

PAL
C252EC38 00000011
48000034 7C67182E
81030040 A0680008
89280006 1D2903E8
7C691A14 A1280004
39000000 6108EA60
7D2941D6 7C691A14
4E800020 3CE0809C
80E7D730 80670018
88630000 5463103A
80E7000C 4BFFFFB9
7C6C1B78 7E639B78
4BFFFFAD 7C6A1B78
2C0A0000 4182001C
7D4C5050 3920XXXX
7D4A4BD6 392000YY
7C6A4851 41A10008
38600000 00000000

NTSC-J
C252E5B8 00000011
48000034 7C67182E
81030040 A0680008
89280006 1D2903E8
7C691A14 A1280004
39000000 6108EA60
7D2941D6 7C691A14
4E800020 3CE0809C
80E7C790 80670018
88630000 5463103A
80E7000C 4BFFFFB9
7C6C1B78 7E639B78
4BFFFFAD 7C6A1B78
2C0A0000 4182001C
7D4C5050 3920XXXX
7D4A4BD6 392000YY
7C6A4851 41A10008
38600000 00000000

NTSC-K
C251CC90 00000011
48000034 7C67182E
81030040 A0680008
89280006 1D2903E8
7C691A14 A1280004
39000000 6108EA60
7D2941D6 7C691A14
4E800020 3CE0809B
80E7BD70 80670018
88630000 5463103A
80E7000C 4BFFFFB9
7C6C1B78 7E639B78
4BFFFFAD 7C6A1B78
2C0A0000 4182001C
7D4C5050 3920XXXX
7D4A4BD6 392000YY
7C6A4851 41A10008
38600000 00000000

XXXX = Multiplier (the game will subtract one point every XXXX milliseconds)
YY = Max Points (first place will always receive this amount)

Source:

my code (not doing anything, not copying any files)
#include <stdio.h>
#include <stdlib.h>
#include <gccore.h>
#include <grrlib.h>
#include <stdio.h>
#include <fstream>
#include <wiiuse/wpad.h>
#include <time.h>
#include "RobotoBold_ttf.h"
#include "pointer_png.h"
#include "background_png.h"
#include <unistd.h>
#include <ogcsys.h>
#define pressed_quit() (WPAD_ButtonsDown(0)&WPAD_BUTTON_HOME)
#define held() (WPAD_ButtonsHeld(0)&WPAD_BUTTON_A)
using namespace std;
#define WSP_POINTER_CORRECTION_X 200
#define WSP_POINTER_CORRECTION_Y 250
int main()
{
u32 white=0xFFFFFFFF;
u32 reserved=0xFFFFFFFF;
u32 selected=0xEEEEEE99;
const int screenWidth=640;
const int screenHeight=480;
const int defaultWidth=120;
float copyButtonWidth=defaultWidth*3;
int copyButtonHeight=defaultWidth;
int copyButtonX=(screenWidth/2)-(copyButtonWidth/2);
int copyButtonY=(screenHeight/2)-(copyButtonHeight/2);
GRRLIB_Init();
WPAD_Init();
WPAD_SetDataFormat(0, WPAD_FMT_BTNS_ACC_IR);
GRRLIB_ttfFont *robotoBold=GRRLIB_LoadTTF(RobotoBold_ttf, RobotoBold_ttf_size);
GRRLIB_texImg *pointer=GRRLIB_LoadTexture(pointer_png);
GRRLIB_texImg *background=GRRLIB_LoadTexture(background_png);
string copyNKWii="Copy MKWii Save To NKWii";
while (1)
{
WPAD_ScanPads();
ir_t ir;
ISFS_Initialize();
SYS_Init();
WPAD_IR(WPAD_CHAN_0, &ir);
GRRLIB_DrawImg(0, 0, background, 0, 1, 1, white);
int pointerX=(ir.sx-WSP_POINTER_CORRECTION_X);
int pointerY=(ir.sy-WSP_POINTER_CORRECTION_Y);
GRRLIB_Rectangle(copyButtonX, copyButtonY, copyButtonWidth, copyButtonHeight, reserved, true);
GRRLIB_PrintfTTF(copyButtonX+30, copyButtonY+(copyButtonHeight/2)-11, robotoBold, copyNKWii.c_str(), 23, 0x000000FF);
GRRLIB_DrawImg(pointerX, pointerY, pointer, ir.angle, 1, 1, 0xFFFFFFFF);
if (pointerX>=copyButtonX&&pointerX<=screenWidth-copyButtonX&&pointerY>=copyButtonY&&pointerY<=screenHeight-copyButtonY&&held()) {
reserved=0x0A0A0A87;
string defaultPath="nand:/title/00010004/524d4345/data/";
string nkwiiPath="nand:/title/00010004/4a4e4b57/data/";
string mkwiiFiles[]={"banner.bin", "rksys.dat", "wc24dl.vff", "wc24scr.vff"};
string srcPaths[]={defaultPath+mkwiiFiles[0], defaultPath+mkwiiFiles[1], defaultPath+mkwiiFiles[2], defaultPath+mkwiiFiles[3]};
string dstPaths[]={nkwiiPath+mkwiiFiles[0], nkwiiPath+mkwiiFiles[1], nkwiiPath+mkwiiFiles[2], nkwiiPath+mkwiiFiles[3]};
for (int loopCounter=0; loopCounter<4; loopCounter++) {
string src=srcPaths[loopCounter];
string dst=dstPaths[loopCounter];
std::ifstream  src_f(src, std::ios::binary);
    std::ofstream  dst_f(dst, std::ios::binary);
    std::ifstream lastFile(dstPaths[3], std::ios::binary);
    std::ifstream firstFile(to_string(ISFS_MAXPATH).c_str(), std::ios::binary);
    if (!firstFile) {
    copyNKWii="File Path Is Invalid.";
    }
    else {
    copyNKWii="File Path Is Vaild.";
    }
    if (lastFile) {
    copyNKWii="Files Succsesfully Copied.";
    }
    dst_f << src_f.rdbuf();
}
}
if (pointerX>=copyButtonX&&pointerX<=screenWidth-copyButtonX&&pointerY>=copyButtonY&&pointerY<=screenHeight-copyButtonY) {
reserved=selected;
}
else {
reserved=0xEAEAEA87;
}
if (pressed_quit())
{
break;
}
GRRLIB_Render();
}
GRRLIB_FreeTTF(robotoBold);
GRRLIB_FreeTexture(pointer);
GRRLIB_FreeTexture(background);
GRRLIB_Exit();
exit(0);
}
fyi, devkitpro doesn't show any errors

Golden Length Modifier [1superchip]

This code modifies how long a golden mushroom lasts in frames. Not the boost. 
(To modify the length of the boost use this code: Mushroom Boost Modifier)

NTSC-U
0279f2c6 0000XXXX

PAL
027a9f6e 0000XXXX

NTSC-J
027a95da 0000XXXX

NTSC-K
0279832E 0000XXXX

XXXX values:
0x0383 - 2x as long
0x01C2 - Default
0x00E1 - 1/2 as long

Code Creator: 1superchip

This is a Gecko Code Create by me and CLF78. It was made for Fynn935083's in-progress custom Gamemode "Catch". This gives you the Item you set after the Countdown

PAL:
C2535C7C 0000000F
901D0048 2C030000
40A2006C 3C60809C
886338B9 2C030001
4082002C 3C60809C
806320D8 38830038
8063291C 1C630058
7C641A14 88830021
88A30022 7C042800
40A20034 3C60809C
8063D728 88630B84
1C630248 3C80809C
80843618 80840014
7C632214 388000XX
9083008C 38800001
90830090 00000000

NTSC-U:
C2531134 0000000F
901D0048 2C030000
40A2006C 3C60809C
8863F0B1 2C030001
4082002C 3C60809C
8063D918 38830038
8063291C 1C630058
7C641A14 88830021
88A30022 7C042800
40A20034 3C60809C
80638F68 88630B84
1C630248 3C80809C
8084EE20 80840014
7C632214 388000XX
9083008C 38800001
90830090 00000000

NTSC-K:
C2523CD4 0000000F
901D0048 2C030000
40A2006C 3C60809B
886313F9 2C030001
4082002C 3C60809B
80630718 38830038
8063291C 1C630058
7C641A14 88830021
88A30022 7C042800
40A20034 3C60809B
8063BD68 88630B84
1C630248 3C80809B
80841C58 80840014
7C632214 388000XX
9083008C 38800001
90830090 00000000

NTSC-J:
C25355FC 0000000F
901D0048 2C030000
40A2006C 3C60809C
88632919 2C030001
4082002C 3C60809C
80631138 38830038
8063291C 1C630058
7C641A14 88830021
88A30022 7C042800
40A20034 3C60809C
8063C788 88630B84
1C630248 3C80809C
80842678 80840014
7C632214 388000XX
9083008C 38800001
90830090 00000000

XX Values:
Green Shell = 00
Red Shell = 01
Banana = 02
Fake Item Box = 03
Mushroom = 04
Triple Mushroom = 05
Bob-omb = 06
Blue Shell = 07
Shock = 08
Star = 09
Golden Mushroom = 0A
Mega Mushroom = 0B
Blooper = 0C
POW = 0D
Thunder Cloud = 0E
Bullet Bill = 0F
Triple Green Shell = 10
Triple Red Shell = 11
Triple Banana = 12

This code lets you use specific room messages to activate/deactivate flags of your choosing. They only work with the host of the room, and will be delivered to the other players when the match is started. The flags will be reset if you enter a new room or go offline.

NOTE: All players must be running the code, else the room will stall.

Since this is a highly customizable code, only the source is provided (with a sample that lets you control two 1 bit flags).

Exiting the factory will no longer restart the music.

NTSC-U
04711A54 48000010

PAL
04719920 48000010

NTSC-J
04718F8C 48000010

NTSC-K
04707CC8 48000010

Code created by: _tZ
Code credits: CLF78 (shortened the code to one line)

I'm currently sitting on some codes i would like to release at some point but which are awkward. So i made this poll to see if anyone is interested. Feel free to vote for your favourites

Description for all codes:

• Bullet Bill Cannon Speed Modifier: Overtaking people in cannons is a sight to behold.
  
• Randomize Vehicle Stats Every X: Affects most stats except Weight (intentionally) and Auto/Manual drift, doesn't affect Driver Stats.
  
• Room Message-based Flags: Enable flags in friend rooms by sending specific messages.
  
• Triple Item Auto-Trail: For example, if you have more than one Bob-omb/Blue Shell it will automatically make them rotate for you once you use them, doesn't work online.
  
• Ultimate Lap Modifier: Allows from 0 up to 128 laps (requires file edits to work perfectly). This is not a dynamic code like the original lap modifier, but it sets the lap count to an arbitrary value for every track (you can probably tell where it comes from )
  
• VS Points Based on Finish Time Difference with 1st: Works offline and in Friend Rooms.
  

Due to the Wiimmfi payload hooking at the address of the original code, it no longer works. So, here's an updated version that does.

NTSC-U
C2531134 00000002
3803FFFF 901D0048
60000000 00000000

PAL
C2535C7C 00000002
3803FFFF 901D0048
60000000 00000000

NTSC-J
C25355FC 00000002
3803FFFF 901D0048
60000000 00000000

NTSC-K
C2523CD4 00000002
3803FFFF 901D0048
60000000 00000000

Source:

• In order to use in a VS Race, also use this code.
  
• Will instantly finish a battle.
  

Hi! Been trying to get new characters for my sons Hack Pack and have downloaded the MKW Character Pack. Tried to put the files in the right location as per the zip file and the characters load up on the Riivolution screen. I choose the characters but when I go to play the game, only the original characters show. What am I doing wrong??!