According to ESRB, this game contains: Language, Violence, Blood, Suggestive Themes
Parents should be wary of Metal Gear Solid 3: Snake Eater. While it doesn't have the horrific violence of games like Manhunt, it allows players to kill enemy soldiers graphically if they choose. On the other hand, Metal Gear Solid 3 contains a very thoughtful story about death and war, so parents may want to play it with their children if they'd like to discuss topics with them like loyalty, patriotism, and betrayal. There is also an extra mode that is bloodless called "Snake vs. Monkey Mode" where Snake tries to catch monkeys in the jungle. This mode is very silly and designed for kids and adults alike, so no worries there.
Fans of military stealth games such as Splinter Cell may have mixed feelings about Metal Gear Solid 3. The controls and camera are not based at all on the conventional wisdom of 3D, but the retro style of classic 2D gaming.
People looking for a "serious" story may be disappointed since Snake Eater indulges in all sorts of wacky elements including walking robots and magic. However, it should be noted that Snake Eater's plot, characters, and acting are far less cheesy and melodramatic than they were in previous Metal Gear games, so people who were previously turned off by the soap opera feeling of Kojima's efforts may want to give Metal Gear Solid 3 a try.
Fans of Metal Gear will undoubtedly love Snake Eater. It has the deepest gameplay of the series, and improves on every aspect of Metal Gear Solid 2. Fans will also appreciate the story, which is well written, compelling, and provides excellent backstory for the other Metal Gear games.
Deaf and Hard of Hearing gamers will still probably be able to play Snake Eater, but with some difficulty. Being a stealth game, alertness to sound factors into strategic decisions. However, most sounds are accompanied by force-feedback and/or text, so adjusting may be possible with some practice.