In this thread, you can create fake codes such as how to play as Waluigi.

Code Name: How to play as Boshi
Description: Make sure you play as Yoshi for this entire Code! First, play a V.S. Mode on "Yoshi's Valley" with 3 other people playing with you. You must come in 3rd place. Then, do a Battle Mode with 3 people and make sure you come in 3rd place again. Then, do Mario GP Mode with only 1 player and do "Special Cup" and come in 3rd place on all races so you get the Bronze Trophy. If you did it right you should hear Luigi say, "Congratulations!" Then it will show a Movie-Clip where Boshi comes in and steals the Bronze Trophy from you then you will have to verse him in Battle Mode and if you win you will get the Bronze Trophy back and hne is a playable character.

Get Waluigi

To get Waluigi, just reset the game but hold the reset for an hour and when it turns back on, you should hear "Waluigi!" instead of the driver's sound. Now, go to the driver sel;ect screen and hold L and R and Waluigi should replace Wario.

to get king boo u have to pick bowser mario luigi and peach in battle and then in vs. player one must be bowser and come 1st once ,2nd the rest of the time for 20 matches in battle and vs then go to GP i plsyer and win ist in every race in every cup then once u have gold on special bowser comes on the podium but mari knocks him of and then boo comes and takes it off mario,u then hear a long boo noise and then go to charachter select and get bowser but press L then r 2 times and then A u will have picked boo:D:D

Get Shy guy

To get Shy guy, pick wario and get 1st in every race in every cup in every difficulty level. Now, as Wario, get an item box in VS. mode with your enemy being Mario and you should get a shy guy charm. Get killed, then go to the Character Selection Screen and press c-up, c-down, c-left, and c-right at the same time, then, while holding L and R, press down. Shy guy will appear the other characters. Shy guy has the speed of Bowser and the acceleration of Toad and also toad's off-road ability. His weight matches Luigi's, but if he hits any other player, including Bowser, that player will spin out.

how to get a different coulored yoshi.
firstly pick yoshi in GP i player and then come first in all of the cups on 150cc and then pick peach and then do the same except on extra and then have 5 battles and have yoshi as player 1 and him win all the time with 3 baloons.
then on the 5th time you win he should do a special dance and all the other yoshi's will come and you can pick anyone you like.by swapping with c.up and c.down:D

Hmm, here's a fake code.

How to play as Tumble (From Mario Party 3):

Beat the Kart Racing with Toad. (Easy, ain't it?)

how to get giga bowser:

play as bowser and beat the game with him 50 times and play 25 battles with him against another player and then use mario and beat the game 5 times, then use peach and beat it 5 times, then u get giga bowser butu gotta race him one on one and beat him or if u dont beat him,. u gotta do it all over again

how to get original Luigi

First get gold in all of the cups even in the mirror courses
and then t the credit screen push in a b c up 3 times and then press L R cdown 6 times and then push in z c left c right and start 10 times. Now you have to fight a black white thing you get swords and guns as items too

Why dont you all go submit these in as cheats, I'm pretty sure it will be helpful.

quote XsLashEr325

Why dont you all go submit these in as cheats, I'm pretty sure it will be helpful.

Good FAKE Codes, everyone, keep them coming!

Name of Code: How to play as Link.

Description: First, do the cheat to get Boshi in and then play as Boshi on Toad's Turnpike. Complete Toad's Turnpike in less then 5 minutes and you will hear Peach scream ( Like when she does when she slips on a Banana Peel ) and Waluigi laugh. Then, exit out of the course and play on Yoshi's Valley. Beat Yoshi's Valley in less than 3 minutes and you will see a sword fall from the sky. Shortly after, Link will fall out of the sky and pick his sword. He is then unlocked as a Playable character.

Enter a race on Rainbow Road in Time Trial. Now race backwards for 50 laps to unlock Metal Mario.

quote MasterDan

quote XsLashEr325

Why dont you all go submit these in as cheats, I'm pretty sure it will be helpful.

They are made-up codes.

To obtain a cheeseburger weapon enter a race on Banshee Boardwalk and drive off the edge for 24 hours. I just get stranger with these, don't I?

AMEN TO THAT.
to get a extra hidden version of everylevel.you must

complete that game on 150 cc 10 times with everycharacter.
then play anymode where you can pick the gran prix races and pick the character one's(like luigi's raceway anhd bowsers castle)but you must use the character in the title though.
once for each course.
then press R then L 20 times them enter ont he title screen A B LR LLLL RRR CUP CDOWN C RIGHT X UP ABBBBBA LR.

phew:o now you have all the extra sercond courses

(p.s sorry if that was confusing)