> The phenomenon of "correlated RNG" (or "CRNG")

This is a pretty funny abbreviation since CRNG is sometimes "cryptographic random number generator", which would not be susceptible to this correlation. Albeit I think CSRNG is more common.

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Lalabadie 2 hours ago | parent [-]

The criteria for calling a RNG "cryptographically secure" are incompatible with the game design goals here.

The game needs a RNG that's stable when seeded, for reproducible runs. I look for the same kind of qualities when doing generative art.

In comparison, a CSPRNG should be safe from oracle attacks, which is essentially the opposite goal.

	▲	gpm 2 hours ago \| parent \| next [-]
		CSPRNGs are absolutely seedable deterministic functions that will result in entirety reprodible runs. The only difference is that if you don't know the seed it is computationally difficult to predict the next value given the previous ones. But that's not something any game dev is ever going to want to do (or waste time trying to do)
	▲	HansHamster 2 hours ago \| parent \| prev [-]
		I would expect all RNG algorithms to be deterministic and stable with their seed, but the cryptographically secure ones to have some additional properties like making it unfeasible to reverse the seed from the output, having a very long period or strong guarantees on the distribution of the output. It's just that using a 'secure' algorithm is often overkill for a game when you don't really need those extra guarantees.