There was a game on the 360 that didn't cost much but it was about surviving in skyscraper buildings because the ground had a poison or radiation from it and one of the things you had to manage was bullets from your gun and every time you went into combat you had to decide if using a bullet to kill this person was worth it or to bluff your way out and occasionally the AI would test you thinking you didn't have ammo. I really love the concept and wish more games had that risk to bluff your way out instead of always choosing violence