Doom Ps1 I was so young it did not even come to me that I was fighting against Demons I thought they where Aliens back then.
GTA San Andreas PS2 never completed it but did a lot of shit in game
GTA 5 I played that one a lot to
Star Wars Battlefront 2
Uncharted 2 my favorite of the whole franchise
I loved the game to death to some degree I was very good.
Dark Souls I think Ps3
Rygar Ps2 same as below
Tekken 4 same as below.
Prince of Persia the warrior within. Got later removed by my ma so I only got that back when I was older
Fallout 3 thanks to my big bro it found it so cool and mysterious back then not anymore though still cool but it lost much of its aaaw factor for when I grew up.
Fallout New Vegas that one I played a lot not from my brother.
Skyrim I bought it basically on launch for the Ps3 back then I loved Oblivion and wanted to desperately to play it back then I begged and begged and promissed to only play it on my 16 birthday which I did not keep

I could not really wait that long It would have taken forever and I know now that its the worst version of Skyrim but I never had major issues with the game back then.
Dead Space not sure which part my brother brought it over for me to play
So overall I played a couple of games that I was to young for usually I begged my ma to buy me this games other times my older brother brought time over to play like Doom and GTA Vice City I also played a bit Silent Hill 2 back then I did not like it back then as a kid thanks to the controlls

now I liked it.