I had a copy of the Fortran IV source for the PDP-11 back in the late 70’s. My friend and I tried to extend the game a bit, but soon ran into trouble. Dunno whether this is the same code or not.
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That was me. On the engineering filesystem of GEISCO (General Electric Information Services Co Mark III foreground, the thing using Honeywell equipment that later became GEnie) ... still a kid I leveraged the debugger to root-like access for a time and it was fun. I did a global search for Adventure and found it in 4 separate 'private' employee-user places, and patched them all. ~1981.
For the past 10-ish years I've been searching in vain for a few of the games from GEnie, including "Blackdragon" and "Dor Sageth", if anyone has any leads...
WOW. You just made my day (actually year, but I'm embarrassed to say so), thank you!
I patched copies in 4 different places. So someone DID eventually adapt one of those versions I patched into a 'door' game on GEnie. It feels kind of odd, because I have been watching caving and surface rock art videos lately where modern explorers are quick to brand things as 'vandalism', even if they do not obscure the other, and even inscriptions from 1888. It makes me wonder, what year exactly did 'vandalism' begin?
So in Colossal Cave, was my "Artoo Detoo was here" rock art, or vandalism?