Crusader Kings 2, Dark Souls trilogy, Any elder scrolls or fallout title, Total war series, Far cry 2 or 3 only try 4 if you want the option to coop the campaign.
Are you lonely?
Do you need an outlet to vent your obvious superiority and aggression?
Luckily I have found something just for you!
https://www.youtube.com/watch?v=Cx1J2CzNnS8
Step one have the equipment/Sdar diving gear and a boat(or sub)
Step two go to the big red circle that says turtles
Step three kill turtles try shooting their bellies in between their little turtle flippers i believe to kill them quickly, then bag them
Step four Profit???? no but really take the little turtles to wongs to sell them