Personally I would go for dragon age II and Deus Ex: Human Revolution. If you want in depth opinions, go to IGN.com and search for each of those games. Take 5 minutes to read through each of the reviews, and by the end you should know which one you want.
The Witcher is a deeper, darker, all around better experience than the others. The writing is great, the game is gorgeous, and the story is INTENSE. Not saying Deus Ex and DA2 are bad.
They're both good games, I just think the Witcher 2 is amazing.
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.