Waluigi Racer - Win the Flower Cup at 100cc to unlock Waluigi's kart.
Turbo Birdo - Win the Flower cup at 150 cc to unlock Birdo's kart.
Bloom Coach - Win the Flower cup at 50 cc to unlock Daisy's kart.
Green Fire - Win the mushroom cup at 50 cc to unlock Luigi's kart.
Battle Buggy - Win the Mushroom cup at 100 cc to unlock Baby Luigi's kart.
Bullet Blaster - Win the special cup at 50 cc.
Para Wing - Win the Star cup at 50cc.
All Cup Tour - Win all cups at 150cc.
Special Cup - Win the Mushroom, Flower, and Star Cups at 100cc.
Toad and Toadette Duo - Win the special cup at 100 cc to unlock these two characters.
Grand Slam Cup - Win the Mushroom, Flower, Star, and Special Cups at 150cc.
Luigi's Mansion Battle Stage - Win the Mushroom cup at 150 cc to unlock this extra stage for multiplayer battle.
Bowser Jr.'s Kart
Win the Special Cup in the 50cc class.
Daisy's Kart
Win the Flower Cup in the 50cc class.
Diddy Kong's Kart
Win the Star Cup in the 150cc class.
King Boo's Kart
Win the Special Cup in mirror mode.
All Cup Tour
Win the Special Cup in the 150cc class to unlock the All Cup Tour, which is a combination of all of the four default cups.
Special Cup
Win the Star Cup in the 100cc class.
Mirror mode
Win the All Cup Tour in the 150cc class.
Luigi's Mansion battle arena
Win the Mushroom Cup in the 150cc class.
Tilt-A-Kart battle arena
Win the Flower Cup in mirror mode.
Baby Luigi's Kart
Win the Mushroom Cup in the 100cc class.
Birdo's Kart
Win the Flower Cup in the 150cc class.
Alternate opening and ending screens
Win the All Cup Tour in mirror mode.
All bonuses
Will all cups with a "Gold" rank under all difficulty settings.
Unlocking new Karts in Grand Prix
Win a Grand Prix in first place to unlock a new Kart. There is a bonus Kart in each cc class and Grand Prix that you can win (nine total).
Koopa Paratroopa's Kart
Win the Star Cup in the 50cc class.
Luigi's Kart
Win the Mushroom Cup in the 50cc class.
Petey Piranha's Kart
Win the Star Cup in mirror mode.
Toadette's Kart
Win the Mushroom Cup in mirror mode.
Toad's Kart
Win the Special Cup in the 100cc class.
Toadsworth's Kart
Win the All Cup Tour in mirror mode.
Waluigi's Kart
Win the Flower Cup in the 100cc class.
Quick Start
To get a boost, repeatedly tap A at the start of the countdown.
Ghosts
To unlock the staff ghosts, you must beat these times (special cup is unknown):
Mushroom Cup
Luigi Circuit - 1'29"000
Peach Beach - 1'23"000
Baby Park - 1'14"000
Dry Dry Desert - 1'53"000
Flower Cup
Mushroom Bridge - 1'34"000
Mario Circuit - 1'44"000
Daisy Cruiser - 1'55"000
Waluigi Stadium - 2'02"000
Star Cup
Sherbet Land - 1'26"000
Mushroom City - 1'53"000
Yoshi Circuit - 2'02"000
DK Mountain - 2'15"000
Mushroom short cut (Yoshi Circuit)
In order to pull this short cut off you must have a light weight kart with atleast one mushroom in your arsenal. When you are coming around the corner just before you leave Yoshi's nose you will see a gap in the fence. This gap allows you to drive of the road, over a cliff. If you activiate your mushroom just after you leave the cliff you will be propelled across the air into a tunnel, which can cut almost a whole second or more off your time.
Characters special items
Here are the special items for each character.
Birdo/Yoshi: Egg. acts like red shell by homing in on closest kart. When hits person egg brakes open releasing stars, shells, or musrooms.
Diddy kong/Donkey Kong: Big Bannana. When someone hits this big bannana breaks into three little ones.
Mario/Luigi: Fireballs. Sends 5 fireballs forward or back(wherever you throw.) and makes the person on the back of the kart it hits start on fire.
Wario/Waluigi: Bomb ombs. Gets a bomb omb and blows up after a certain time or when someone go to close to it.
Bowser/Bowser Jr: Spiky shell. Sends a giant spiked Bowser shell ahead or in back of you.
Peach/Daisy: heart sheild. Puts a heart shield around the kart. When you run into an item or get hit by an item you take it.(like you run into a bannana then it will then go in your hands so you can throw it at other people.)
Toad/toadette: Gold musroom. Just like Mario Kart 64 the golden musroom acts like a musroom except you can use a lot more time like 10 or something.
Baby Mario/Baby Luigi: Chain chomp. Sends a chain chomp forward and any one gets hit gets hurt. but if you get hit while holding him he runs away. Or if you hold him for the maximum time he still runs away.
Koopa/paratroopa: Three shells. Gets either three green shells or three red shells to throw at opponents.
Get a speed boost
Hold down the "R" button while turning. Release it when the sparks turn blue.
Peach Beach Shortcut
Best used on the third lap. When you come to the beach, instead of turning right, turn left and jump to the other side.
Mushroom Bridge Shortcut
After the first tunnel, go right onto a dirt path (best used with a mushroom). Right before you cross the bridge, go onto one of the arches where you'll start hitting speed areas. Be careful to stay on because you lose a lot of speed if you fall off.
Daisy Cruise Shortcut
After going through the dining room and past the kitchen, go fall down in the pit and navigate through the tube.
Mushroom City Shortcut
Stay on the right side of the main road and you will see a purple path, take it.
Yoshi Circuit Shortcut
After one of the first turns you will see a small tunnel. Use a mushroom to fly across. After the second tunnel there is an opening on the guard rail. Use a Mushroom to fly across and land in a tunnel, and you'll pop out at a U-turn.
Wario Colliseum Shortcut
When you come to the part where you have to go around the pit, go in the middle and jump to land on speed areas.
Dino Dino Jungle Shortcut
When you come to the first wooden bridge take a right just a bit and you'll find a new ramp. When you enter the cave, go right and use a mushroom to get across the bridge.
Bowser Castle Shortcut
Where a Bowser statue is breathing fireballs at you keep going straight to an opening. Start a drift right before you make the jump, and if you do it right you should gain a lot of ground.
Waluigi Stadium Shortcut
When you reach the second turn, before the boosted jump into the fire wheel, take a right, and drive on the dirt path right next to it. Powerslide/Mini-Turbo around the corner afterwards.
DK Mountain Shortcut
After the straightway with the boulders, where the pit is, brake immediately and turn to your right. Give yourself a little acceleration room and jump the gap, saving 3-4 seconds.
Dry Dry Desert Shortcut
There are two options to mushroom over the sand. The best area is right after the 3 cacti, straight towards the quicksand pit. The second is near the end: mushroom under the sign.