My first played was I believe Perfect Dark b/c the version of Mortal Kombat I played was the infamous SNES port, so I don't feel that counts.
EDIT: Actually I believe that my first game that could qualify as an M was Eternal Champions on the Genesis, a fighting game known for its background fatalities. This was before I was even in Kindergarten I believe. Though I don't know if it was rated as such, or if ratings existed but I think for the time it would qualify as such.
EDIT: Actually I believe that my first game that could qualify as an M was Eternal Champions on the Genesis, a fighting game known for its background fatalities. This was before I was even in Kindergarten I believe. Though I don't know if it was rated as such, or if ratings existed but I think for the time it would qualify as such.