Bowser battle:
Select the "Continue Search" option at the title screen. Seven spheres will appear. Enter ZPF*M86 as a password to reach Bowser, the final Boss. To view the ending sequence, the Boss' head six times. Leave through the door that the Boss used to enter, then find and free Mario to complete the game.

Roy battle:
Enter JPF13HT as a password to advance to face Roy, the last Koopa. Hit him six times to reach Bowser.

	First room	Second room	Third room
First door	PVV23CZ	CX746YF	DWV6P78
Second door	FCBSB6W	NBGR6CF	PCD1384
Third door	YHYAMLZ	XIKRN4X	DJ49LZ3
Fourth door	Y4MOPFW	X**KLDK	D9FKPTR
Fifth door	G5F96CX	S48O5N4	TTMGMQM