List of AO-rated video games

AO is the highest rating in the ESRB system, and indicates that the organization believes that the game's content is suitable only for players aged 18 years and over.

Four games have been given the rating solely due to extreme levels of violence: the canceled Thrill Kill (1998), the initial cuts of The Punisher (2005), Manhunt 2 (2007), and Hatred (2015).

The only game to receive the rating for reasons other than pornographic content or extreme violence is Peak Entertainment Casinos (2003), which allows players to gamble using real money.

Self-imposed restrictions by publishers, distributors, and retailers limit the availability of AO-rated games, thus the rating has been described by journalists as a "kiss of death" and de facto ban.

In selected cases, an AO-rated game was cancelled prior to its release, temporarily received the rating post-release due to the inclusion of normally-inaccessible content that met the rating, the uncut version of the game was released at a later date with an AO rating, or an unrated or self-rated version, patch, or downloadable content (DLC) was released via a platform with more liberal content rules (such as Steam).