Sublogic didn't just make a flight simulator, they also made a fun pinball simulator:
https://archive.org/details/a2_asimov_pinball_construction_s...
Bill kindly shared the source code on GitHub:
https://github.com/billbudge/PCS_AppleII
This was discussed on HN way back in 2013:
"Night Mission Pinball" wasn't created by Budge but rather Bruce Artwick, the same guy who created the Sublogic Flight Simulator (and early versions of the Microsoft Flight Simulator which descended from it).