PANORAMICAL
Like with other aspects of AI, there are some procgen techniques that have faded into the background: it can sometimes be hard for me to tell if a game has a random map generator because that’s no longer the unique selling point it once was.
On the other end of the spectrum there are things like Panoramical, which couldn’t exist without procgen techniques to give it a complete generative space to explore. In each world the player has eighteen different dimensions to travel in, each reacting with its own link to the music and effects.
I’ve mentioned the value of having a completely connected manifold to explore; this is one way to implement it. Like Mu Cartographer, you really have to see it in motion: the smooth transitions from one state to the other are a major part of the draw.
There’s also some relationship with Proteus, which shouldn’t be surprising, since they share a composer.