Probably Call Of Duty.
There's a constant voice at the back of my mind telling me that I shouldn't be enjoying this, that real people died in those exact same scenarios -- and the nail on the coffin was the fact that they did some programming wizardry so not two characters have the same face, utterly destroying any semblance of deniability I could have had.
And yes, I'm well aware of how much overthinking is involved on it, but that's my honest answer to what the topic is asking, particularly after having met plenty of actual war veterans.