At what age did you start playing Mature rated games regularly?

Metal Gear Solid was the first M rated game I played. Played it at the age of seven and continued playing M rated games after that.

8 goldeneye all day.

Like many I suspect, it was GTA3 at about 11-12.

~13

10 years old .... Wolfenstein 3D FTW !!!!!!

Carmageddon and GTA (Original) I think where my first 'mature' games. 
 
Actually scratch that, Leasure Suit Larry was my first 'mature' game. Took me ages to figure out I needed a condom before I ventured on the street.

Actually, uhh... younger than 6-8. I was playing MK when I was about 5? It's been my favorite game series ever since.

I played Mortal Kombat when I was rather young as well, that's at least the first one I remember. Since then, I've just been buying games I enjoy, mature or not.

I was 6. Mortal Kombat Trilogy.
 
Don't worry. I'm not that messed up.
 

I played Waxworks when I was 6. Scarred me for life

EDIT:

NUMBER OF THE BEAST POSTNUMBER!

probably 11-13 ish, not really sure.

I had to vote "+13" because I was playing games before there was an ESRB "M" rating or any rating.  The Infocom game, "The Leather Goddesses of Phobos" was my first mature game and it was a text adventure released in 1986.  I was 16 at the time.  Of course, there weren't too many similar games to be had back then.

I don't remember..so I guess pretty damn young.

@natetodamax said:

Somewhere around 8-10, I think. I used to play Goldeneye 007 on the N64 a bunch.

Goldeneye for the N64 was a Teen rated game

My first M game was Resident Evil 4, but a couple years after it came out, so I think I was about 14 years old when it started being a regular thing for me.

The time when wolf 3D and doom came out. I was about 12 at the time.

Around 8 years old.  I think Doom was my first mature game and I was so scared of it at the time, I used to play it with the volume on mute lol 

Remember playing Wolf3D alot when I was 9 years, and also got alot of gory (and great) games for the Amiga 600 :)

I don't know.  By the time anyone took those esrb ratings seriously I was already 18. 

I played MGS1 when I was like 9.

Hmm... I can't say I ever recalled looking at the ESRB ratings back when I was underage. I was a Nintendo kid though, so they didn't have any M rated games until the N64 era, right? And about then is when I got my first computer where doom and quake were king. So I'd guess 11-12 ish.

I started playing them regularly around 7. I was able to get my hands on a boatload of them at 11.

Somewhere around 8-10, I think. I used to play Goldeneye 007 on the N64 a bunch.

I don't remember many mature games when I was a kid. I suppose the first ones were Doom, Wolfenstien, and Mortal Kombat when I was in middle school. My mom really didn't have a reason to keep them from me since my report cards were always A's with a B or two sprinkled in there, I was in GATE(a gifted children program) and had an IQ of 157. Basically I had free reign over everything in my downtime as long as I succeeded at my "job" which was performing at the top of my class in school.

I was playing Wolf 3D at age four, so does that count? Doom shortly after that.

First one that I can remember was GTA. Also played Doom, Wolfenstein 3D and Worms (although Worms was rated Kids to Adults). 

My first game that I owned was Loaded for the PS1, back when I was six.

I was never prevented from playing or watching anything. My earliest memories are of watching Alien with my dad.

I don't even know the big deal with M rated video games. I got way more fucked up when I saw my first anime, tentacle rape scene in La Blue Girl and I was 20 at the time.

Got Halo 2 for Christmas from my mom in 2004, so I was 11.

Probably about 12-13 I guess? I can't remember really. Could've been earlier.

Like 5. my first games involved a fair amount of death. Blade Runner and Broken Sword etc.

As soon as my mom thought me how to write "Load" on my C64, so about.. 5.

I probably started playing mature-rated games (or rated equally over here with an 18 rating) when I was around 15 (which was in 2000). It was a big deal getting the uncensored version of Half Life here in Germany or that friends got their hands on a copy of the banned GoldenEye. Before that, there weren't that many mature-rated games around anyway. At least not on consoles.

@McGhee_the_Insomniac said:

There were no ratings when I was young enough for it to matter.

This.

First "nasty" game that I remember was Nemesis the Warlock

It all started once I got my hands on Metal Gear Solid 2 from my friend during my freshman year of high school. So... I was around 14.

Probably around 7-8 when I would play Resident Evil and Turok

Quake 1, dude.

When I started playing GTA III, I think 8.

14/15? I wasn't that into games as a kid, since my parents didn't want to buy me them.
 
Also, I was a Nintendo kid.

It was weird for my 9th birthday at the local skating rink that I opened up MK3. I was shocked at the time that my parents trusted me with it but I doubt they realized what they were buying. I also remember watching the first episode of South Park 14 years ago when I was 10.

Wow, that was 14 years ago...