Real Life Graphics

[CacoFFF]

Not to talk about particle physics, a simple table would need a lot of points for collision, for destruction (generating chunks in the moment, not premade), weight...
In order to achieve that in a city sized map, an insanely great processing power would be required, talk about quantic processors.
But lol, of course, if you want real life graphics, you are going to have to emulate real life physics, and I doubt someone will be able to emulate every single atom.