PS3: Any good Shooters or RPGs?

[AcridSmoke]

I would like to play a PS3 game (Shooter, RPG, Shooter/RPG kind). Something easy would be nice as I am inexperienced with shooters, and a rating of Teen or Mature(mild).
Note: I've played Uncharted.

 

[SOME1]

my all time favourite shooter is cod 4/5, it is the best, i highly recommend it!!!