Let's not forget No Man's Sky here. Or Elite Dangerous' planet-scale procedural generation using solar system properties to fuel the deterministic but procedural generation of tectonic plates that again seed how a planet's surface is deterministically generated, even down to impact craters over millennia, for a universe of billions of consistent deterministically generated full-scale planets you can land on. Something you couldn't do without proc-gen because there's not enough disk space to store it.