Apparently you can reconstruct the state of a common pseudo-random number generator from knowing only *two* sequential outputs: https://jazzy.id.au/tags/prng.html
Most games probably don't use secure random sources.
Does this mean that you could make a Tool-Assisted Speedrun that could predict the RNG?
I guess the trick will be that most game results don't show you the entire result of the RNG, the 32-bit number or whatever it is. You only see pass/fail, or a selection from a loot table with dozens of items, not millions.
So you probably need a lot more than two observations, and/or observe events with a very broad range of outcomes.
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