there is a big star door. go in it and beat the level then go into the hole you see after you exit the level.
There is no Bowser in Board Bowser's sub in Super Mario 64. But, by any chance, are you talking about Super Mario 64 DS?
You have to best Bowser on the 1st floor
In the basement....past the water level
Defeat bowser
no but you CAN beat the first bowser battle and he will give you a key and not the basement is unlocked!
To the final Bowser level, Bowser in the Sky.
There is no game called Super Mario 63. There is one called Super Mario 64. On the final level of it you have to fight and defeat Bowser.
no
That's easy. You can't.
play around with the game.see what you can do.
If you have the DS version you can use Action Replay to play as bowser. Unfortunately you can't on the Nintendo 64 version.
"So long-eh, Bowser." The "long-eh" part is a reference to Mario's stereotypical Italian accent.