According to ESRB, this game contains: Blood and Gore, Intense Violence, Strong Language, Use of Drugs and Alcohol
Parents will want to take note of the fact that Call of Cthulhu is a Mature rated title—and deservedly so. It's got blood, violence, horrific imagery, drug use, swearing, and many other things not meant to be experienced by the underage gamer. On top of that, the difficulty level and slow pace is sure to turn off anyone with a short attention span.
Survival Horror fans should definitely add this to their "must play" list. While the game isn't as innovative as something like Resident Evil 4, it does a magnificent job of recreating the unsettling atmosphere of Lovecraft's fiction.
Casual gamers may find the slow pace and lack of action early on to be a deal breaker, but those who stick with it (and can handle the difficulty of some of the missions) will find one of the more underrated games to come along in recent memory.
Deaf and Hard of Hearing gamers will miss out on the strange ambient noises and sound effects (including Jack's mutterings as he slowly goes insane), but will be able to follow the main plotline thanks to full subtitles.