After turning on the PS2, press and hold ''Start'' and ''Select'' on the 2nd controller to activate this mini-game.
Square button = accelerate
X button = jump
Triangle button = rocket attack (when the gage is full)
Just knock the opponent out of the ring to win.
At the title screen, press and hold L2, then rotate the right analog stick 30 times. You will hear a chime and go into the mini-game.
While playing the game, press L1 + L2 + R1 + R2 and push Start + Select.
Enable the "Kaneyo Mosquito" code. Then, hold L2 and quickly press Up, Right, Left, Down, Square(2), R2(3) at the character selection screen. A shout will confirm correct code entry.
Enter these codes at the charater selection screen
Father Mosquito - Hold L2 then press up right left down (x2) R2(x3) to activate this code, you'll first have to get mother Mosquito.
Mother Mosquito - Hold L1 the press up right left down (x2) R1(x3)