I don’t believe in unrelatability. And there’s a whole bunch of historical stuff I want that doesn’t seem to be out there at present in RPG form, which may or may not be obscure. For instance:

(*) Babylonia early in the reign of Hammurabi.
(*) 6th to 7th century CE Byzantium.
(*) Post-Roman northern Italy.
(*) Late Moorish Spain, when al-Andalus is fragmented (the period fictionalised in G.G. Kay’s Lions of Al Rassan).
(*) A game set in the Middle East in late antiquity. Touching on Byzantium, but further east as the focus.
(*) A game set around the Harrowing of the North, just after the Norman Conquest of England.
(*) Saxon England around the time the Viking raiding is at its beginning.