CRC Test:

Press and hold A + B + Select + Start on Controller 1, then press Reset.

 

Hidden Kanji Message:

After the game starts, while the "Sachen" logo animation is in progress, press and hold A + B + Select on Controller 1 and A + B on Controller 2 at the same time. Continue holding these buttons until the logo is standing still. Release all the buttons except Select on Controller 1, and while holding it press A, B on Controller 1, A, B on Controller 2, and Up, Left, Down, Right, Start, Start, Start, Start, Start, Start, Start, Start, Start, Start on Controller 1 again, then press any other button.

 

Level Restart:

During gameplay, hold A + B on Controller 2, then press Reset to restart the current level from the beginning. Note that the default value of lives is 5 in this case and rapid fire is on.

 

Level Select:

In the "OPTION" menu, hold A + B on Controller 2 while selecting the starting level number to be able to select from all 6 levels.

 

Sachen Kanji Logo:

After the game starts, while the "Sachen" logo animation is in progress, press and hold A + B + Select + Start on Controller 1. Continue holding these buttons until the logo is standing still. Release all the buttons except Select, and while holding Select press A, B, Start, A, B, Start, Up, Left, Down, Right, Start, Start, Start, Start, Start, Start, Start, Start, Start, Start, and finally press any other button.