Heart of it All. The scrap take on the lawful evil hell/ Baator. Previously named Heart of Iron and there might be a couple of spots were its still called that.
All got about 30% done and had several major revisions (i.e delete everything but a couple of tables) to it.
I never came up with a good city crawl mechanic for it either, and those were some of biggest obstacles to getting this one done. I also struggled trying to get mortals, souls and devils to be all interconnected in a economy that kind of made sense. Might of just over thought that one .
Meant to do a lot more with post-life debt and weird soul punishments, plus give this place its own currency and play with the idea of money as distilled suffering.
All that I manged to do is some broad descriptions and a lot of niche tables.
Here's the links to the planescrap primer: