Thanks. I learned a lot from those adventures, which was the main aim.

At the time, those computers had no hard drives or larger capacity disks. So my avenues for recovery and further progress were limited.

Reality decided I had learned enough in that direction, is a teleological interpretation. But also a realistic viewpoint.

I have no regrets.

Today (literally today) I am working on a grammar/parser that allows exploration of some interesting math I came up with. The beauty of being able to navigate an abstract world with real complexity, seek and encounter genuine surprises, interactively at the speed of keystrokes, captures a lot of the joy of those games! With the addition of a crafting element.