Someone said :
Would it be hard or complicated, to download violent games online and have them password encrypted? To restrict, underage persons from playing them?
you can encrypt your PSN account, (make it password protected.) But there's nothing stopping young eyes/hands physically going to the game on their own profile and pressing 'begin'.
Having the game in your console as software is akin to having a regular copy of the game within arms reach on a shelf. The only thing stopping the kip switching it on is discipline.
That said, I haven't looked into the parental setting in a PS3 or XboX. it wouldn't surprise me to learn if 18+ games are imbued with meta data that tells the console it is an 18+ game, and that as a parental setting you can make such games password protected if you so wish. So your son/younger bro having his age entered correctly on his account will be met with a password request if he tries to start any 18+ games. (and your account will also be password protected)
However another aspect is certain violent games teeter on the threshold of "fantasy violence". Games go out of their way to tone down the "macabre" while trying to stay as gorey/cool/flashy as possible.
So you often end up with either carefully programmed game which are violent to within a inch of being too violent for PG, but essentially what they are are the Spider man/Iron man/harry potters of the gaming world; yes they're PG12or15 whatever, but they know
the audience is a 11 - 30 years olds. Or in the case of some titles, the 'Family Guy/South park' approach of making something so outrageous that it has to be well know to the audience. That owning a copy of one of these games to a 11-15 year old is akin to having a Slipknot T-shirt or knunchucku or having taken a mouthful of Guinness once;
It is the ultimate in rebellious, criminal activity.
...but in reality, the kontraband element is an illusion and the game is more or less expected to be found by children any ways.
not so for the like of Gran theft auto, or DoA Beach volly ball, but certianly for any fantasy violence games, Mortal Kombat being a prime example.