Can a video game give you a real world mind set/training?
But first, the game. its free and legal to download as it is abandonware, but the community has kept it alive two decades now. S.T.A.L.K.E.R. Anomaly mod for S.T.A.L.K.E.R.: Call of Pripyat
It forces you to use your weapon sights and windage.
It gives you options to customize your weapons, and I'll just bet what you carry is in the game!
You have a 50LB load limit.
You must eat and drink, sleep and take care of health issues…