N. Sanity Beach
N. Sanity Beach is the very first level of the very first Crash Bandicoot game. It's a very famous level because it not only gave first time players insight as to how the game is played and controlled, but it is also seen as a very fun level to explore in.
This level gives the player in-depth information on controlls and exposes the player to many situations commonly seen in the game. It familiarizes them to many of the game concepts as well.