I recently obtained an operating copy of Flight Simulator II for the Commodore 64. This was my main flight sim for about three years from 1984 to 1987 when I finally got a PC clone.
1 frame per second. Mesh graphics. All of the ground is green, all of the sky and water is blue. Almost no buildings, and what buildings there are are simple see-through mesh or just "sticks" in the ground. Even the runways are green (I had forgotten that). There are a few major highways, represented by a white line. There are a total of 80 airports in four areas, NY, LA, Seattle and of course Chicago. Long live the Meigs Field starting location! Oh, and it takes 2:40 to load from disk.
I loved this sim, and must have logged 3000 hours on it. But playing it again reminds me of just how far the sim world has come, and how lucky we are. We would never have believed it was possible to ever have the sims we have now back then. We live in sim nirvana. I will keep repeating that to myself.