Target Bullseye Tournament
Press [Start] + [Z] at the title screen to display the codes screen. Then, enter "CEUFPXJ1" as a code.
Hollywood Video Tournament
Press [Start] + [Z] at the title screen to display the codes screen. Then, enter "BJGQBULZ" as a code.
Camp Hyrule Tournament
Press [Start] + [Z] at the title screen to display the codes screen. Then, enter "0EKW5G7U" as a code. Note: The first character is the number zero.
Mario Open Tournament
Press [Start] + [Z] at the title screen to display the codes screen. Then, enter "GGAA241H" as a code.
Bowser Badlands Tournament
Press [Start] + [Z] at the title screen to display the codes screen. Then, enter "9L3L9KHR" as a code.
Bowser Jr.'s Jumbo Tournament
Press [Start] + [Z] at the title screen to display the codes screen. Then, enter "2GPL67PN" as a code.
Peach's Invitational Tournament
Press [Start] + [Z] at the title screen to display the codes screen. Then, enter "ELBUT3PX" as a code.
Taunt
When in multi-player mode, press the [Up], [Down], [Left], or [Right] on the D-Pad during an opponent's turn to taunt them. There are four different taunts per character.
Compliments
When in multi-player mode, press [C-stick Up], [C-stick Down], [C-stick Left], or [C-stick Right] or the during an opponent's turn to compliment them. There are four different compliments per character.
Hole in one contest
Hold [Z] and press [Start] at the title screen to play a hole in one contest.
In-game reset
Press [B] + [X] + [Start] during game play.
Cheep Cheep tournament
Finish the Lakitu Cup in first place.
Sands Classic tournament
Finishthe Cheep Cheep tournament in first place.
Blooper Open tournament
Finish the Sands Classic tournament in first place.
Peach's Invitational tournament
Finish the Blooper Open tournament in first place.
Bowser Badlands tournament
Finish the Peach's Invitational tournament in first place.
Star Tournament
Finish the Bowser Badlands tournament in first place.
Play as Boo
Get 50 Best Badges in tournament mode.
Play as Bowser Jr.
Play the 18 Hole Birdie Challenge in the Side Games. Get a Birdie or better on all eighteen holes.
Play as Petey Pirahna
Successfully complete putting, approach, and shot practice under all three difficulty settings in the Side Games.
Play as Shadow Mario
Successfully complete the "That's a Volcano!" level in ring mode. To do this easier, play as Bowser.
In order to unlock Shadow Mario, you must win all the Ring Challenge holes. You can do any hole with any character, as long as each hole has been beaten. Once you have won the last unbeaten hole, Shadow Mario will be unlocked.
Star characters
Play against that character in Character Match mode after being invited (getting an envelope) and win. A star usually adds something about 30 yards to your swing.
When you have unlocked the star mode of a character, they will automatically have a boost to their hits. However, if you press [R] while that character is highlighted at the selection screen, they will get a huge bonus to their hits at the cost of some of their control.
Back nine holes:Birdie Challenge
Successfully complete the front nine holes in Birdie Challenge to unlock the back nine holes.
Intermediate and expert practice modes
Successfully complete novice mode in any practice to unlock the intermediate mode. Complete the intermediate mode to unlock expert mode. Note: In shot practice, expert is "Trouble Shot".
Control weather
Repeatedly reload a saved game to get weather conditions that you like.
Control replay
Press [B] after the ball stops to immediately jump to the replay. To view it from another angle, watch the replay again. Press [A] for a faster replay.
Control ball spin
Quickly press the following buttons when choosing your accuracy.
Topspin: Press [A]x2.
Backspin: Press [B]x2.
More topspin: Press [A], [B].
More backspin: Press [B], [A].
Connection bonus
Use a link cable to connect to Mario Golf: Advance Tour on a Game Boy Advance. Neil and Ella can now be played in Mario Golf: Toadstool Tour with all the stats and abilities unlocked on the Game Boy Advance. Additionally, the further you are in RPG mode on Mario Golf: Advance Tour, the more bonus characters will be unlocked in Mario Golf: Toadstool Tour. Also, taunts that are customized in Mario Golf: Advance Tour will be transferred to the same character in Mario Golf: Toadstool Tour .