Mirrored courses
 
 Win the gold cup in the 150cc class. Then, reset the Nintendo 64
 system. If done correctly, the title screen will change to confirm
 that mirrored courses are enabled. Enter the 150cc option under GP
 mode to access the courses. Note: When racing the mirrored Toads'
 Turnpike, you will be going against the traffic. 
 
 Mario 64 castle
 
 On the Royal Raceway course, follow the yellow road to the right of
 the big jump to reach the castle from Mario 64.
 
 View Mario Raceway record
 
 At the title screen, press R to see the best time trial record for
 Mario Raceway.
 
 Course ghost racers
 
 Enter time trial mode and complete a course, beating the time
 indicated below. Then, choose "Retry" to race the course again. The
 phrase "Now Meet the Course Ghost" will appear. The course ghosts are
 automatically saved to the cartridge for future replay without
 beating the course time again. 
                          
 Course - Time   
                          
 Mario Raceway - 1'30"00
 Luigi Raceway - 1'52"00
 Royal Raceway - 2'40"00
                           
 Hints
 
 Air increase
 
 Line your kart up directly behind another next racer. Wisps of air
 will appear from the sides of your kart. The small speed increase
 that your kart will gain should be enough to pass the racer that is
 being followed. 
 
 Turbo start
 
 At the instant between the dimming of the second light and the
 flashing of the blue light at the start of the race, press A to
 accelerate. If done correctly, your kart will rapidly accelerate
 ahead of the other racers. Note: Accelerating too soon will result in
 a spin out. 
 
 Turbo boost slide
 
 To slide around a corner, hold R and press the Analog-stick to steer
 in the direction of the turn, then to the opposite direction. If done
 correctly, the smoke from your kart will change from white to yellow.
 Continue to hold R and repeat the steering motion with the
 Analog-stick to change the smoke from yellow to red. Release R once
 the smoke becomes red. Now the speed of your kart should increase for
 a few seconds. 
 
 Banana peel recovery
 
 When a banana peel is run over, immediately hold the brake for one
 second, then accelerate to avoid skidding or losing a balloon in
 battle mode. 
 
 Quick restart
 
 After falling off a course, watch as Lukita places your kart back on
 the track. When your kart is two or three tire widths from the track,
 press A to immediately resume the race.
 
  Game Shark Codez:
 
     
  P1 Always Last Place                                  
  81164390 FFFF
  81164392 FFFF
     
  P2 Always Last Place                                  
  81164394 FFFF
  81164396 FFFF
     
  P3 Always Last Place                                  
  81164398 FFFF
  8116439A FFFF
     
  P4 Always Last Place                                  
  8116439C FFFF
  8116439E FFFF
     
  P1 Cannot Use Weapons                                 
  80165F5D 01B2
  80165F8A 01B2
     
  P2 Cannot Use Weapons                                 
  8016603D 01B2
  8016606A 01B2
     
  Shadow Items                                          
  80165F1A 0000
     
  Logo Loop                                             
  8018EDE0 0001
     
  Automatic Mario                                       
  8018EDE8 0001
     
  Cannot Select Cup                                     
  8018EDEC 0001
     
  Crazy Items                                           
  80165F1D 000F
  80165F6D 000F
     
  No Eighth Place (It Removes Yoshi Or Luigi)           
  81164399 0005
     
  Press GS Button For Debug Menu                        
  8818EDEF 0002
     
  Press GS Button For a Purple Title Screen             
  881EEDC4 0002
     
  Press GS Button For Smeared Title Screen              
  881FEDC4 0002
     
  Press GS Button at Title Screen to Lower Flag         
  8818EDD9 0002
     
  Press GS Button at Title Screen For Even Lower Flag   
  8818EDD8 0002
     
  Press GS Button at Title Screen For Flag to Left      
  818EDD1 0002 
     
  Press GS Button at Title Screen For Flag to Right     
  8818EDD5 0002
     
  Press GS Button at Title Screen For Tilt Flag Forward 
  8818EDCD 0002
     
  Press GS Button at Title Screen For Move Flag Up      
  8818EDC9 0002
     
  Press GS Button at Title Screen For Shrink Flag       
  8818EDC5 0002
     
  Press GS Button at Title Screen For No Flag           
  8818EDC4 0002
     
  Press GS Button at Title Screen For Big Flag          
  8818EDC2 0002
     
  Press GS to Play 2 Players in 1 Player Game           
  8918EDE4 0003
  8918EDE4 0001
  8918EDE4 0005
  8918EDE4 0007
     
  Lap Modifier Codes                                    
     
  No Laps To Race P1                                    
  81164390 0000
  81164392 0002
     
  No Laps To Race P2                                    
  81164394 0000
  81164396 0002
     
  No Laps To Race P3                                    
  81164398 0000
  8116439A 0002
     
  No Laps To Race P4                                    
  8116439C 0000
  8116439E 0002
     
  Press GS Button For One Lap To Race P1 [Note 1]       
  89164390 0000
  89164392 0001
     
  Press GS Button For One Lap To Race P2 [Note 1]       
  89164394 0000
  89164396 0001
     
  Press GS Button For One Lap To Race P3 [Note 1]       
  89164399 0000
  8916439A 0001
     
  Press GS Button For One Lap To Race P4 [Note 1]       
  8916439C 0000
  8916439E 0001
     
  P1 & P2 Mode Only                                     
     
  Weapon Modifier P1 [Note 2]                           
  80165F5D 00??
  80165F8A 00??
     
  Weapon Modifier P2 [Note 2]                           
  8016603D 00??
  8016606A 00??
     
  P3 & P4 Mode Only                                     
     
  Weapon Modifier P1 [Note 2]                           
  8016611D 00??
  8016614A 00??
     
  Weapon Modifier P2 [Note 2]                           
  801661FD 00??
  8016622A 00??
     
  Weapon Modifier P3 [Note 2]                           
  801662DD 00??
  8016630A 00??
     
  Weapon Modifier P4 [Note 2]                           
  801663BD 00??
  801663EA 00??
     
  Balloon Codes [Note 3]                                
     
  Infinite Balloons P1                                  
  8118D8C0 0002
     
  Infinite Balloons P2                                  
  8118D8C2 0002
     
  Infinite Balloons P3                                  
  8118D8C4 0002
     
  Infinite Balloons P4                                  
  8118D8C6 0002
     
  GS Button For Balloon Number Modifier P1              
  8918D8C1 00??
     
  GS Button For Balloon Number Modifier P2              
  8918D8C3 00??
     
  GS Button For Balloon Number Modifier P3              
  8918D8C5 00??
     
  GS Button For Balloon Number Modifier P4              
  8918D8C7 00??
     
  The Bomb Codes [Note 4]                               
     
  P1 Always The Bomb                                    
  8118D8C0 FFFF
     
  P2 Always The Bomb                                    
  8118D8C2 FFFF
     
  P3 Always The Bomb                                    
  8118D8C4 FFFF
     
  P4 Always The Bomb                                    
  8118D8C6 FFFF
     
  Character Codes                                       
     
  P1 Character Modifier                                 
  8018EDE4 00??
     
  P2 Character Modifier                                 
  8018EDE5 00??
     
  P3 Character Modifier                                 
  8018EDE6 00??
     
  P4 Character Modifier                                 
  8018EDE7 00??
     
  Always Have 46 Points Codes                           
     
  Mario                                                 
  8118D9C8 002D
     
  Luigi                                                 
  8118D9C9 002D
     
  Yoshi                                                 
  8118D9CA 002D
     
  Toad                                                  
  8118D9CB 002D
     
  D.K.                                                  
  8118D9CC 002D
     
  Wario                                                 
  8118D9CD 002D
     
  Peach                                                 
  8118D9CE 002D
     
  Bowser                                                
  8118D9CF 002D
     
  Quantity Digits to Accompany Character Modifier Codes 
     
  01 - Mario                                            
  02 - Luigi                                            
  03 - Peach                                            
  04 - Toad                                             
  05 - Yoshi                                            
  06 - D.K.                                             
  07 - Wario                                            
  08 - Bowser                                           
     
  Quantity Digits to Accompany Weapon Modifier Codes    
     
  00 - Nothing                                          
  01 - Single Banana                                    
  02 - Multi Bananas                                    
  03 - Single Green Shell                               
  04 - 3 Green Shells                                   
  05 - Single Red Shell                                 
  06 - 3 Red Shells                                     
  07 - Blue Shell                                       
  08 - Lightning Bolt                                   
  09 - Upside Down '?'                                  
  0A - Star                                             
  0B - Ghost                                            
  0C - Single Mushroom                                  
  0D - 2 Mushrooms                                      
  0E - 3 Mushrooms                                      
  0F - Gold Mushroom                                    
     
 Note 1: Press the GS button after passing the staring line.
 
 Note 2: Sometimes this code glitches in battle mode, when using an
 item that you cannot normally get.
 
 Note 3: With this code, the amount of balloons are not reflected on
 the screen. 
 
 Note 4: With these codes, you will not be a bomb on the screen, nor
 can you kill others by running into them.