When a lot of people here say "realism" they really mean "verisimilitude." They want self consistency, and they're just using the word realism to convey that.
Well, OFP/ARMA/ARMA2 gets fairly close, as far as FPS games go. Of course, they're billed as hyperrealistic games adapted from army training simulations or something.
True but I was talking about the traditional FPS game not games derrived from training simulators. I got alot of training simulators from fighter pilot sims to naval warfare sims and they can become very realistic.
For instance the naval warfar simulator I play it is basically you quietly sneeking up on a ship or convoy you located avoid detection from any escorts keep your periscope as low as possible then you have to thumb through your historically correct ID manual to ID the ship get the mast heigth, use the hashmarks on the periscope to gauge the distance. Then you send all that information to the TDC you then have to send the order to the bow to open each tube manually and constantly update the TDC with new input figures and then finally you launch. After launching you basically sit and wait while ordering a starboard knuckle while giving the order to go to 150 meters all ahead slow.
There is more to it than that but that is just the basics and it is very realistic it involves knowing math as well as relying on your own senses. I find the game very fun and enjoy playing it from time to time when I have the time. But I doubt many people find it fun and that is probably why UBI with their 5th installment of the same game basically has turned it into an arcade point and click shooter over the simulator aspect that it had for the first 4.
majority prefers easy games that arent hard to do just for fun when bored. But there are some like me that love a challenge and prefer hard games and theres just not many of those out there. Portal 2 looks to be pretty hard and when it comes out I will get it as well but I would like to see FO NV get alittle more realistic than it was in FO3.