ProMeLaGen - Procedural Metroidvania Layout Generator

I've always been fascinated by the idea of a procedurally-generated Metroidvania.  Of course, the best sort of Metroidvania experience will always be the hand-crafted one, but it's still something that I keep coming back to, wondering how to approach. I've started work on this project a while ago.  So far I've got it generating world layouts that, at a glance, look like something you'd find in a p…