In August 2005, Jack Thompson, an activist who campaigns against video games, demanded that the Entertainment Software Rating Board (ESRB) change its rating for "Killer7" from "M" (for Mature, ages 17 and up) to "AO" (for Adults Only, ages 18 and up). He cited Casamassina's review of the game at IGN, claiming that "full-blown sex sequences" present in the game would be harmful to minors. Casamassina rebutted that the scene in question involved two fully clothed adults and that a similar scene in a film would garner "only a PG-13 or, worst, R-rating".