Playing any games on facebook is free, you just need an account to sign in. And you don't need to download anything except browser plugins that you might need to run it. But the game itself can be played for free without any conditions such as answering surveys.
Most facebook games will only require you answer surveys and such if you want to earn free in-game "cash" or "gold" and the likes.
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.