Extra continues: Press Run at the title screen to advance to
the next screen, then press I four times, II four
times, Right, Left, Right, Left, Right,
Left, Right, Left to begin with sixteen continues.
Password menu: Press Run at the title screen to enter the main
menu. Then, press I, II, Right, Left,
I, II, Right, Left, I two times,
Left two times, II two times, Right two times.
The password option will appear. Press I to enter the password
Negative colors mode: Enter the following Japanese characters as a password
in row-column format: