Want to know about the Newgrounds rating system?

You got it!

E - Everyone: Suitable for all ages and audiences admitted.

T - Teen: Some material may not be suitable for children under 13.

M - Mature: Some material may be inappropriate for children under 17.

A - Adult: No one 18 and under admitted for anyone.

Also, Check on @Vista-Sound13's post to learn about the Newgrounds Age Ratings!

FOLLOW THE RATINGS at our Newgrounds Rating System website (Not a real link)

WARNING: If you're under the age of 18 to see A-rated movies, It says here that is restricted and access denied that you're not 18, You need to be 18 to see A-rated videos. Remember the A rating definition: No One 18 and Under Admitted for Anyone.