According to the ESRB, this game contains: Violence
Parents should be aware that there is (naturally) a considerable level of violence here with a number of mean-looking attacks and some bone-snapping throws. Some of the female characters display some questionable poses and outfits, but in general the sexual content is low. There is no offensive language.
Fighting game fans already either love Tekken or hate it. There seems to be no middle ground, and Tekken 4 doesn't have anything here that will change your mind about the series either way.
Tekken fans will want to check out Tekken 4 for the new characters, but theres not a lot here besides the environment and subtle changes that will differentiate it from the rest of the series. People who don't own any version of Tekken should probably pick up Tag Tournament instead. The larger roster and choice of fighting modes will be a better value for your money.
Hearing Impaired gamers receive full text everywhere it counts, both in the opening and closing scenes for all characters. No problems with access here.