Anyway, the PDF of the magazine with the original 1978 souce code is included.
source.bas - my transcription of the PDF into a text file, with no alterations whatever (I even left in at least one formatting mistake from the original code). As far as I could make it, it is character for character exactly like the original source. Which only would run on a CDC Cyber's version of BASIC.
chipmunk.bas - is the version of it I altered, very minimally, so that it runs in Chipmunk Basic, a very ANSI compliant version of BASIC available for the three major PC platforms (Windows, MacOS X, and Linux, even RasPi apparently). I won't say it's bug free, but it seems to work pretty well.
Interestingly, the original O.T. had no graphics, and no dysentery, so if you remember any of that (which I do), you didn't play the original.