When you power on the console, press Start once to reach the second title screen, then press Down, Down, Down, Down, Down, Down, Down, Down, B, B, B, B, B, B, Left, Left, Left, Select, Select, Select, Select, Select, Select, Select, Select, Select, A. A part of the kana in the game's title will disappear to confirm correct code entry.
This enables the stage selection mode by default. Furthermore, you are invulnerable to all enemies in the game, although you will still die from spikes, etc. You will begin with 256,005,000 yen in your wallet. You'll see the name of one of the game's programmers in your HP bar. Finally, during the final boss, go to the right side of the screen and press Down to make a random item fall from above that you can use as a weapon.
Turn on the game, hold A, B & Select and press Start 3 times. Once the screen goes black, release the buttons and press the B button to select levels.
Contributed By: ReyVGM.
In this game, there exist four endings, three bad and one good. The determination is semi-random, but based on the amount of yen you end the game with. (Thus, manipulation of the money you have can allow you to obtain the desired ending.) The game will read your money in the format of ddccbbxxaa - pay attention to this fact, as it is referred to this way in the below descriptions as well. For example, if you had 1234567890 yen, dd is 12, cc is 34, bb is 56, xx is 78, and aa is 90. (xx is usually ignored. aa happens to represent your deaths, so for the good ending you must die less than three times, for example.)
Unlockable How to Unlock Ending #1 (a bad ending) Found if the larger of aa and bb is greater than or equal to cc AND the highest of aa and bb is greater than or equal to dd Ending #2 (a bad ending) The highest of aa, bb, and cc is less than dd AND aa must be greater than 03 Ending #3 (a bad ending) The highest of aa and bb must be less than cc AND the highest of aa, bb, and cc is greater than or equal to dd Ending #4 (the good ending) The highest of aa, bb, and cc is less than dd AND aa is less than 03
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