im 11 and im trying to convince my mom to let me play assassins creed and i need some reasons to try to persuade her

MY reasons
- i play 2 other rated M games
-there are rated T games WITH WORSE THINGS IT!
-i watch rated R movies all the time with her
-i can pay 4 it

Stratmando

She may want you to have less exposure to violence.
Just because it has influenced others your age and older to make some bad decisions(go bezerk, or give bad ideas) doesn't mean it happens to everyone?
If it is Your house, you may have more say in the matter. Good Luck.