Mario Hoops 3 on 3 Codes -

Hard mode:
Complete the Rainbow Cup in the Normal Tournament.

Saikyou (expert) mode:
Complete the Rainbow Cup in the Hard Tournament.

Alternate costumes:
Win the indicated cup to unlock the corresponding alternate costume. To wear the costume, Hold Up, Down, Left, or Right while moving the appropriate character into the basketball ring. Different costumes may appear depending on the direction used while moving that character.

Black Mage: Rainbow Cup in the Hard Tournament (Bronze rank) 
Daisy: Flower Cup (Silver rank) 
Flyguy: Star Cup in the Hard Tournament (Silver rank) 
Ninja: Rainbow Cup in the Hard Tournament (Silver rank) 
Peach: Mushroom Cup (Silver rank) 
White Mage: Rainbow Cup in the Hard Tournament (Gold rank) 
Yoshi: Flower Cup in the Hard Tournament (Silver rank) 

Gira Gira Desert stage (Star Cup):
Win by more than 800 points in the Star Cup in the Normal Tournament.

Malboro Garden (Flower Cup):
Dunk three times in the Daisy Garden court in the Flower Cup. Then, collect the blue seed from the panel that appears.

Sunset Beach (Mushroom Cup):
Select Exhibition mode, and win a game by over 200 points at Noko Noko Beach between 4 p.m. and 6 p.m.

Flower Cup:
Complete the Mushroom Cup.

Rainbow Cup:
Complete the Star Cup.

Star Cup:
Complete the Flower Cup.

Play as Birdo:
Complete the Mushroom Cup in the Hard Tournament (Bronze rank).

Play as Black Mage:
Complete the Rainbow Cup (Gold rank).

Play as Boo:
Complete the Flower Cup in the Hard Tournament (Bronze rank).

Play as Bowser:
Complete the Star Cup.

Play as Cactuar:
Play in the Desert stage in Exhibition mode. A cactus may appear in the sand. Get above it and Catuar will jump out the sand and run away. Win the stage to unlock Cactuar as a playable character.

Play as Dixie Kong:
Complete the Flower Cup (Bronze rank).

Play as Flyguy:
Complete the Star Cup in the Hard Tournament (Bronze rank).

Play as Moogle:
Complete the Star Cup (Silver rank).

Play as Ninja:
Complete the Rainbow Cup.

Play as Paratroopa:
Complete the Mushroom Cup (Bronze rank).

Play as White Mage:
Complete the Rainbow Cup (Silver rank).

Rainbow Road Dribble Race:
Beat the time records in the Peach Castle dribble race (0:45) and Sunshine Road dribble race (0:55).

Bonus basketballs:
Complete the indicated task to unlock the corresponding basketball.


All Silver: Complete the Dribbling challenges. 
Blue And Silver: Complete Training mode. 
Blue And Silver: Do all the practice "missions". 
Cheep-Cheep: Get a "Gold" rank in the Mushroom Cup in the Hard Tournament.. 
Dice: Get a "Gold" rank in the Flower Cup in the Hard Tournament. 
Gold: Collect 5,000 points in your profile 
Goomba: Get a "Gold" rank in the Star Cup in the Hard Tournament. 
Metal Ball With Gold Spikes: Get a "Gold" rank in the Normal Star Cup. 
Orange And Purple: Win the Bowser Castle Exhibition. 
Pumpkin: Lose five times in multi-player mode. 
Rainbow: Win five times in multi-player mode. 
Red And Black: Win Rainbow Cruise in Exhibition. 
Red, White And Blue: Only three point charged shots tourney (Mushroom Cup normal recommended). 
Soccer: Get a "Silver" rank in the Mushroom Cup in the Hard tournament. 
Star: Get a "Gold" rank in the Star Cup. 
Watermelon: Get a "Gold" rank in the Flower Cup. 
Yellow And Green: Win the Daisy Garden Exhibition. 
Yoshi Egg: Get a "Gold" rank in the Flower Cup. 

Bonus Coin Hunters mode levels:
Win five consecutive Coin Hunter mode to unlock the Mario Classic 2-2 and Forest Stage levels.