Bowser in the Dark World

Super Mario 64's first Bowser level is a challenging puzzle-like world with many traps and enemies that are nearly guaranteed to surprise you.

Red coins are difficult to obtain in this level due to the fact that there are many gaps in the course, but finishing this world alone is particularly easy.

The idea is to grab Bowser by his tail and twirl him into a mine, and when the level is completed he will dissapear and leave you with a key to the castle's basement.