Play as Max in Battle Mode
Once you earn all Lightning Cards in Normal Mode, go to the character select screenin Battle Mode. Press Z to play as Max (instead of Bomberman).

Unlock Mini-Game
To unlock a Mini-Game option at the title screen, complete Level 4-3.

Unlock Options in Battle Mode
To unlock a new set of options, beat Normal Mode once. At the Battle Mode stage select screen, Group A (standard power-ups) and Group B (special power-ups) options will appear.

Change view in battle mode
This trick works for any battle game mode. Immediately before the battle game starts, when "Ready" appears, use the C-stick to change the angle of the field. You cannot do this after the game starts.

Group A/B options
Successfully complete normal mode once to unlock the "Group A/B" option at the stage selection screen in battle mode. Press Up or Down to toggle between Group A and Group B. Group A gives you access to the basic power-ups during standard battle mode matches, while Group B gives you access to the more advanced power-ups.