I may have said this on a similar thread in the past, but I’d really like to see an RPG, or even an MMO, based on Jack Vance’s Dying Earth novels.
The setting is a tired, worn-out but currently simple and bucolic, largely mediaeval-fantasy Earth some unknown vast time in the future when the sun occasionally flickers and wobbles, on the verge of going out. A world kind of like the D&D type of world (D&D being partly inspired by Vance) with magic, only there are numerous unknown, lost, hidden vaults, installations, cyclopean ruins, etc., dotted around on Earth’s rich, ancient loam, from civilizations that rose, fell, rose, fell, thousands of times, based on different ideas and principles. Like, e.g. 1) when Earth had a vast evil interstellar empire, 2) the second time Earth had an interstellar empire, but it was good, 3) the time Earth was ruled by magicians, 4) …
Etc.,etc. That type of thing. The canvas is about as big as it could possibly be, offering tremendous scope for the imagination, rich stories and varied gameplay utilizing low tech, mid tech, high tech, unbelievably advanced tech, and magic, on Earth and ranging throughout the galaxy, all with a poignant sense of impending doom and a lore history stretching uncounted years into the past, with things discovered, forgotten, discovered again, forgotten again.