The Entertainment Software Rating Board (ESRB) is a self-regulatory organization that assigns age and content ratings to consumer video games in Canada, the United States, and Mexico. The ESRB was established in 1994 by the Entertainment Software Association, in response to criticism of controversial video games with excessively violent or sexual content, particularly after the 1993 congressional hearings following the releases of Mortal Kombat and Night Trap for home consoles and Doom for home computers. The industry, pressured with potential government oversight of video game ratings from these hearings, established both the IDSA and the ESRB within it to create a voluntary rating system based on the Motion Picture Association film rating system with additional considerations for video game interactivity.