Afraid there's just too many tick boxes I'd tick, so I only ticked one. Post apocalyptic is one of those genres where I can imagine and enjoy a lot of different variants in play. The only thing in my mind a setting for the genre shouldn't have, is space travel. Although I suppose in a time frame where a collapsed civilization had highly advanced/high TL of space travel, an apocalypse could blast it back to a less sophisticated form. I've GMd campaigns set in the Battletech verse, and although there's a heavy enough loss of tech by the succession wars era for that setting to consider it PA on at least some planetary systems, I've never run a campaign for it that verse embraced the PA genre. Once the capability of space travel is there, to me it just seems to take the setting out of the PA genre.
I'm curious about any existing PA settings that feature space travel that was a far less sophisticated form than what existed at it's zenith?