It isn't as simple as download a program, and make a game. Not something like Doom or the other games you listed. It takes programmers, artists, designers, motion capturing, and much much more!
It is a complicated process that no one person can do. It takes many people to make a video game and not one person can do all the steps there are people who can do one step and people who can do another. Something like DOOM, Duke Nukem, Wolfenstein etc are games that do not require ALL of these steps, but it is still something that isn't as simple as download a program and make it.
I would recommend googling a game designing program, but be warned it is probably going to be an extremely complicated program to use, and you may not be able to make anything with it.
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.