nkchan16
Look, Ma! Two Heads!
The Foundation is hard sci-fi, not really retro.
While those illustrations are definitely retro style. I think it would be very hard to make a Foundation universe game and use those retro style illustrations.
It could be the era some time after Three Week's War when the Earth's culture regressed.
I think Caves of Steel era is more likely because there's that Spacer gun advertisement as well. Or some time between these two.On Earth, the closing of the galactic frontier has led to a cultural turning inward. With the present bleak, and the future bleaker, the people of Earth retreat into their storied past. A nostalgic veneration of the past, called medievalism, becomes an important component of Earth's culture. Historical recreations, which died out during the Imperial era, experience a revival of interest. Ancient cultural artifacts such as the Iliad, the Bible, the Qoran and the Arthurian cycle become popular. However, the veneration of the past halts abruptly at the birth of the Space Age. If the Spacers deliberately forget about Earth, the people of Earth deliberately ignore outer space.