Kyuukyoku Harikiri Koshien

Select the last option at the main menu. On the next menu, select the last option and press Select. A hidden options screen and the credits will appear.

Note: This code requires a modified controller that allows all four D-pad contacts to be activated simultaneously. Press Left + Right + Up + Down on controller two then press Reset. A PRG ROM, CHR ROM, and a save-RAM test will be executed.

Hold Left + Select at the "PLAYBALL!!" screen. A sound will confirm correct code entry when game play begins.