Gold crown      -.- get 10,000 coins in a level.
Silver crown    -.- get about 8,000 coins.
Bronze crown  -.- get about 6,000 coins.

Super hard difficulty setting:  Successfully complete the game under the hard difficulty setting. Start a new game, and the super hard difficulty setting can now been selected.

Save Coins  -  When playing a mini game attempting to win gold coins, and you fail to gain any or only win 1, quickly turn off the console and then back on again and you will be able to re-use your 5000 coins to try again.

Ruby Boss - Cuckoo Condor - Easier Win  -  Use a Big Fist from the Item Shop to reduce him to 2 Health Points.

Topaz Boss - Aerodent - Easier Win  -  Use Large Lips from the Item Shop to reduce his Health Points.

Extra Hard Mode  -  Finish the game on the hard difficulty setting. Start a new game, and the super hard difficulty setting can now been selected.

Wario Karaoke  -  Enter the sound room and highlight the "Exit" option. Press Select + Start + R + [L] + Up to unlock Wario Karaoke. Alternately, get gold crowns by collecting over 10,000 coins in all levels to unlock the Wario Karaoke (music test) option.

Wario Karaoke control  -  Press Up or Down to change the pitch of the song. Press Left or Right to change the tempo of the song. Press L or R to toggle between a green CD, yellow CD, or just the lyrics.

Change enemy's color  -  In every level there are ninja-looking enemies with spears. Pound the ground and they will change colors (red, yellow and blue). You can also do this to harmless enemies.

Slower music  -  Crouch down on the ground to make the music slower.

Faster music  -  Press [Down] on a hill and the music will go faster.

Cheerleader  -  On the first mini game, when you have scored 9 points you will get a cheerleader going across the screen. When you score 21 points, you get three cheerleaders, two holding one on their shoulders.

Hall Of Hieroglyphs: Easy money  -  To get more money to spend on mini-games, play the Hall Of Hieroglyphs level and collect every coin, defeat every enemy, and get every diamond.

Palm Tree Paradise: Purple tube diamond  -  To claim the diamond in the purple tube, knock out the scientist then pick him up. Throw him on to the switch to activate the steps by holding [Up] + [B]. When he flashes, release the buttons. Then, climb the steps and grab the diamond.

Pinball Zone: Easy coins  -  Note: this secret only works in pinball zone. Go to the gorilla with the bone on the left side. Turn your back to him and press [B]x2, which allows you to ram. You will find 10 cent coins in the first two blocks.

Wildflower Fields: Hidden Sunflower  -  Go to Wildflower Fields. When you get to the part with the chlorophyll, enter the door at the top of the stem. You will see the head of the Sunflower. Take a worm and throw it into the middle of the head. It will shrink and some coins will appear. Do this three more times and you should have gained about 2000 coins.

Hidden passage  -  On level 2 in the diamond world, go to the top of the screen on the very left of the level. There is a hidden passage that leads to the key.

Game Shark Codes:

Must Be On [M] 896837559E08713E 89CA6F5A8265EEDB
Max Coins C9B176C46013520E 
Max Heart Gauge 216F61B1FCD26964 
Infinite Health 30C141051A944668 
Have Keybird BC19A388E309382D 
Have Peice 1 9A6E9691698E4202 
Have Peice 2 6F9AFDAE5B193DD2 
Have Peice 3 13616CB76A9C317C 
Have Peice 4 3C6F137DB35D5D1C 
Press GS Button For Max Medals 12FEBD4288D7E526 0F778C01E4FC244D