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ADVSYS - An Adventure Writing System... that's all I can say about it and the fact that I could only got it to run on Mini vMac under Mac OS 4.1 or lower. This looks like a very early text based adventure game editor. AdvCom seems to be the adventure compiler which creates the adventure document. There is also an app called AdvInt which seems to be the adventure interpreter (runner).
Unfortunately, I have no manual or any idea of the commands in order to use it.
(400 KiB / 409.6 KB)
AdvSys (on a Mac OS 4.1 boot disk) for vMac / DSK image
Mac OS 4.1 or older, crashes any version of Mac OS beyond that.
Emulating this? It should run fine under: Mini vMac