Reminds me of a "Dice" electronics kit I assembled when I was a kid. It just used some standard sequential counter ICs run at very high rate. Pressing the "roll" button would just stop the counter!
reply:)
replythe closely related not-at-all-random fizzlefade from Wolfenstein: https://fabiensanglard.net/fizzlefade/
EverQuest also used pre-generated numbers. The randomness was derived from the large number of players using the same list.
replyThat sounds like a pretty strong source of true randomness, frankly.
reply(It's then filtered through the list, so the list needs to have good pseudorandomness properties anyway, but still.)