The Witcher 3, Dragon Age Inquisition, Far Cry 3 and 4. These are all open world games, with quests and a lot of action. Good luck.
You should try fallout 3 or new vegas, a bit older but great games. I'm personally waiting on Fallout4. But in the meantime you can also try Dragon age.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.