To your point, DOOM just used an array of "random" numbers, going to the next one each time a number was needed: https://www.reddit.com/r/ProgrammerHumor/commen

To your point, DOOM just used an array of "random" numbers, going to the next one each time a number was needed: https://www.reddit.com/r/ProgrammerHumor/comments/3bhvuj/how_random_numbers_are_generated_in_classic_doom/ https://www.reddit.com/r/ProgrammerHumor/comments/3bhvuj/how... It wasn't even a complete distribution of the numbers 0-255, as some numbers occur more than once (and some never occur).