Entertainment Software Ratings Board

The Entertainment Software Ratings Board (ESRB) is an organization designed to control the suitability of video game content for children. There are 6 basic ratings.

eC-Early Childhood-Playable by all, but especially suitable for younger audiences.

E-Everyone-Suitable for all

E10+-Unsuitable for persons under 10

T-Unsuitable for persons under 13

M-Unsuitable for persons under 17

AO-Only suitable for adults

An RP rating is added to games which have not yet earned a rating by the ESRB. K-A was originally part of the group but was replaced with E in 1999. E10+ was added in late 2004 for games with too much mature content for E, but not enough to earn it a T rating.