At what age did you play your first M rated game?

I was either 4 or 5 years old. The game I played was GTA San Andreas.

13, my mom was actually kind of strict about what games I got up until I was 13. First M rated game was God of War or GTA Vice City

7.....That's why I'm weird.

16...
GTA IV. When I first shot that civilian in cold blood, I thought it was the coolest thing ever.

My parents didn't let me until 16, but I used to borrow my friends' M rated games.

My brother rented one when I was around 10. I played a bit of that. Halo 2 would have been the first one I really played though. I think I was 13 for that one.

Not all Ms are the same though. My first time really doing GTA was actually with the 4th one. Kids shouldn't be playing these games.

Yeah I always thought that Halo didn't deserve an M rating. 

I was playing games BEFORE the rating system existed, and I was not so young... ok you made me feel old :(

First legit M-rated game was Mortal Kombat II and Doom in 1994 for me, so I was 11... technically the first Mortal Kombat was the first mature game a year before, but this was prior to the actual ESRB rating system being established, and the Sega version was amazingly only rated MA-13 at the time, equivalent to a "Teen" rating.

I thought I was 11, but looking back on it, I'm fairly sure I was 10

My cousin let me have a go on GTA III... Then I got it for myself and turned into the maniac I am now