Prior to the foundation of GRB, the Korea Media Rating Board rated video games like most other entertainment media.

In 2006, the controversies surrounding the arcade gambling game Sea Story, which the Korea Media Rating Board found suitable for all-age, lead to allegations of misconduct.

The Korean government responded by creating the GRB in 2006 and making it the only rating organization for rating video games in South Korea.

[5][6][7] By law, games sold in the country must be rated by GRAC prior to sale; additional regulations stipulate age and real name verification for certain mature-audience titles, as well as regulations on location-based games.

[8] In October 2022, the GRAC's sudden decision to raise the age rating of video games was accused of being an illegitimate policy, leading to an audit of the board suggested by Democratic Party politician Lee Sang-heon [ko].