Galactic Defender

First perform the Sound Test code. Now, at the sound test menu, press Start to go to the character selection screen. Choose your character, and before the fight starts, hold Select. If done right, you'll go into the options screen where you'll be able to select a secret 3rd Speed option.

At the password screen, enter the following Japanese characters to access the special password screen (format is Row #, Column #): - 1,7 - 3,9 - 2,6 -. If done right, you'll enter a secret green password screen. Enter the following passwords to access the different debug menus.

First enter the Vs Mode and select the character you would like to play as in the Story Mode. Then select the second player (it can be anyone). When you are asked to select the handicap, put it all the way to the right, so the 1st player has all the advantage. Now, win the fight. Once it's over, select "Exit" to go back to the main menu. Now select Story mode and pick the same character you used in Vs Mode. If done right, you'll character will retain the huge handicap and the enemies will be much easier.

At the password screen, enter the following Japanese characters. Format is Row #, Column #. Once you enter the characters, select End and you'll get an error message. Select it 2 more times and the game will start on the last galaxy.

In the password screen, enter: