Some explicit online video games is usually rated "AO" (means Grownup Only), determining games that have information suitable for only adults over the age of eighteen. Also, online games need to also have an ESRB see that warns that any "online interactions usually are not rated because of the ESRB". https://rvpinform.com/exploring-the-world-of-online-modding-communities-and-their-impact-on-games/