I think most proceduraly generated games aren't that deeply interconnected with regard to their laws of physics.
It's also not clear to me if this is the result of good coding or bad coding. (If you've seen people play around with ROM memory tricks, that's what I have in mind; changing a bit that's used in multiple places for multiple things is different from "we adjusted Planck's constant and now the periodic table looks different because the energy levels come out differently.")
"In one sense, because of the game’s procedural design, the entire universe exists at the moment of its creation. In another sense, because the game only renders a player’s immediate surroundings, nothing exists unless there is a human there to witness it."
"Through the use of procedural generation, No Man’s Sky ensures that each planet will be a surprise, even to the programmers. Every creature, AI-guided alien spacecraft, or landscape is a pseudo-random product of the computer program itself. The universe is essentially as unknown to the people who made it as it is to the people who play in it—and ultimately, it is destined to remain that way."
More at:
http://www.theatlantic.com/technology/archive/2016/02/artificial-universe-no-mans-sky/463308/