Championship Arena in Two-Player mode: Enter "Arcade Mode" from the main menu and select two player mode. At the character selection screen, hold R while selecting a boxer. Change Cornerman Voice: At the character selection screen, press X + any button on the D-Pad to change cornerman voices. Cheap Training: You can get cheaper training in championship mode(actually the price of the next most expensive training below it) Example: you pay 10000(vitamin price) for the 25000 Rumble Mass Regime. Just bring the screen to vitamin(or the training below the one that you want) and then press right on the control pad or stick to bring it to the next training, but, while the screen is changing press A. You will get the training you want at the cheaper training price. This trick also works in reverse. Put the cursor on the cheapest training (Rumble Aerobics) then push left (To highlight Rumble Mass) While the cursor is scrolling hit A. You'll get Rumble Mass, a $25000 value, for the low low price of only $500! You can pump your guys up quickly and cheaply using this method. Once your strength is up to 100%, you're almost invincible and you can easily whoop anyone! Different Costume: When you are selecting a boxer press X+Y then your boxer will be wearing different shorts. Easy Money: Go to prize fight and win the first match, bet the money that you just won on another prize fight. If you start to lose just quit your match and try again. Extra Lu Lu Outfit In the two player Arcade mode hold the R trigger and choose Lu Lu as your desired boxer. At the vs. screen press the X button three times. When the fight begins Lu Lu will be wearing a red lace deal instead of her old outfit. Holiday Backgrounds: Set the internal clock for Christmas (Dec 25) and there will be Christmas trees in the arena with the tables(prize fight arena). Set the clock for Halloween (Oct 31) and there will be skeletons in the crowd in the arena with tables and chairs. Level Select in Two-Player Mode: In 2 player mode, press L for the two tier arena and R for the championship arena. L + R selects the gym. PC Wallpaper: If you insert your R2R game disc into a PC CDROM drive, you will have access to a directory called "extras". Inside you'll find a number of R2R desktop wallpapers you can decorate your PC's desktop. Percentage Jump: Have your VMU hooked up and pick Afro Thunder, Hit X,X,X,Y and watch your percentages go up into the 200's. Recover Life: While your opponent is knocked to the ground, rotate the anolog stick in a circle to recover lost life. Removing the Pause Menu: Pause the game during a fight and press X+Y at the same time to remove the pause window. Unlock All Classes: To unlock Bronze Class enter your gym name as "Rumble Power", to unlock Silver Class enter your gym name as "Rumble Bumble", to unlock Gold Class enter your gym name as "Mosma!", and to unlock Champ Class enter your gym name as "Pod 5!". The Pod 5! code also unlocks all the hidden fighters Patrick Hofmann