OK oh great mastermind, do share your grand intelligence with us plebs. Do explain (in detail) the inner workings of this magical random number generator, and specifically how it is applied on the specific servers we are speaking about?
Oh you can't? OK then kindly STFU forum contrarian. Now go away little boy, adults are talking.
To wildly oversimplify, in Diablo 2 the RNG seed is a random number itself that fits into the drop calculations so that they actually drop different items. Computers use numbers to generate random numbers, if you use the same base or seed numbers for your random number generator you’ll generate the same “random” numbers every time. The RNG seed changes whenever you perform certain actions in game so that you don’t drop the exact same sequence of items every time you start the game.
You can test this in single player by using the -seed command. If you perform the same set of actions you can get the exact same items from a chest. Kill a fallen or interact with something new and you’ll get entirely different items.