Select Level
At the title or options screen press B + Z + A

Cheat Menu
When Bomberman is in his room press Up, Down, Right, Up, Up, Down, A, B, C-Left, C-Right then hold A for 5 seconds

Slider Race:
To get the first ??? on the options screen, get all 5s on all the stages (Bomber Star through Garaden Star). In the Slider Race, you race a snowman on your Bomber Slider with the best time recorded.

Golden Bomber:
To get the second ??? on the options screen, get 5s on all the stages (Bomber Star through Garaden Star) and beat Gossick. In this mode a gold card will turn Bomberman into Gold Bomberman. The best score from three stages will be recorded.

Millian's Treasure Hunt:
To get the third ??? on the options screen, get 5s on every stage (Bomber Star through Gossick). In this mode, a ship returning from Garaden Star filled with treasures blows up and scatters 24 treasures around all six stars. Your goal is to find all of them.

Gossick World:
Get all 24 Other-Dimension Bombs and a 5 on every stage (Bomber Star through Garaden Star).

Be Pibot
Beat the game once to play as Pibot