Hussar
Legend
ROTFLMAO.D&D does that in spades. Gravity is simulated. Weapons are simulated. Armor is simulated. Walking is simulated. Ships are simulated. Worlds, which includes trees, grass, berries, and millions of more things are simulated. Skills are simulated. And on and on and on and on. The DM is just providing color to the multitudes of things that are simulated by the rules and lore.
Weapons and armor are simulated? In what way? How? Exactly how are weapons and armor simulated in D&D? Worlds are not simulated BY D&D in any way. The worlds are virtually system neutral and do not rely on the mechanics in any way. Heck, often the world building contradicts the mechanics in many ways. The king falls from his horse and breaks his neck. 100% impossible under D&D mechanics, yet entirely plausible as a lore element in a setting. NPC dies from a single arrow wound, despite the mechanics 100% making this impossible. On and on and on.
Gravity is kinda, sorta simulated, although not really. Falling damage? When my character can leap off a 100 foot cliff onto jagged rocks and walk away without so much as a limp? That simulation of gravity? Heck, when I can leap off a 100 foot cliff into lava and walk away means that there's not a lot of simulation going on here.
It utterly baffles me why trad D&D players insist that D&D is a simulation. It's just so bizarre. It's like claiming that my Nissan Serena van is a sports car. It really, really isn't. Sure, it can drive on the road and it can go kinda quick. But, no matter what claims I want to make, no one is going to call it a sports car.
The only people who claim D&D as simulation are very conservative D&D players. And, really, they only claim that it's simulation in order to force their onetruewayism on the rest of us to ensure the "purity" of D&D. Which is made all the more ironic as D&D drifts further and further away from it's origins with each new edition adding and subtracting all sorts of elements.